Revolting, that’s what it was. Intimate contact at the best of times was unpleasant, but such a thing as kissing, and with someone you barely knew. The very idea was distasteful. After all, there was no way of possibly knowing where else that tongue had been, nor what kind of colorful flora might adorn it. The problem was only compounded when you proposed the idea of kissing with another species. Was biology even compatible. 
       
       Of course, Gibson had thought about this all before now. And yet, none of it had stopped the robot monkey from winding up in this situation. Here he was, sitting in his room with an alien frog, and he was utterly speechless. He couldn’t even bring himself to state the mundane reasons for wanting to avoid such a thing as kissing, let alone the advanced ones. 
       
       “Primate Gibson…” Suppa, the alien frog in question, approached slowly and set a flipper on Gibson’s hand. It was cold, slimy, absolutely disgusting; and Gibson couldn’t bring himself to pull away. His fingers merely clenched as he looked into the frog’s nervous darting eyes and smiling face. “You’ll tell me if I need to stop right? F-for posterity, I mean.”
       
       Gibson nodded. “Of course, Suppa.” He swallowed and clenched his hand again. This time he did pull away, though only to set his fingers more clearly between the frog’s slimy flippers. “N-now we should get on with it, yes? No sense in waiting to see results…”
       
       With that, the pair shut their eyes, and Gibson leaned forward. His whole body was shaking as he opened his mouth and started to stretch out his tongue. Every moment seemed an eternity as he waited for the invasive feeling of the frog’s own tongue, and whatever passed for lips. Every denial somehow gave way to giving into his fellow scientist’s desire for intimacy, and with every extra second of anticipation he was regretting that decision to satiate Suppa’s desire more and more. 
       
       Perhaps that was why it was so striking when the tongue finally pushed into his mouth. It was so sudden and so intense. The frog’s tongue was massive, forcing Gibson’s mouth apart even as he opened it wide as sense would allow him. It was long too, practically forcing itself down his throat when Suppa leaned in close enough to actually touch his lips. Most importantly of course, it was slimy, and it tasted unmistakably of some strange mix of flies and mint. Every rational thought was telling Gibson to force it out for fear of gagging, or even choking.
       
       However, even with every rational reason telling him to hate it, somehow the kiss wasn’t all that bad. Gibson opened his eyes and lifted a hand to Suppa’s head. The frog’s skin was cold and slick, just like the tongue. Somehow, it felt too wonderful in that moment to be disgusting. He even tried to wrap his own warm tongue around it, and to feel the warmth rush from it much like the heat left his hand.
       
       The kiss didn’t last long, though Gibson suspected it took longer for the tongue to fall from his mouth than was perhaps normal. It took a few good, aching seconds before the frog could pull it away entirely and open his eyes. He still smiled at Gibson the same way as before, even with saliva and slime connecting their lips. “W-well?”
       
       Gibson couldn’t help but notice, now that he could sense things going on in his other extremities again, that he was beginning to feel warm in a place he tended to leave alone most days. “I… I think the experiment was a definitive success…” Cautiously, he glanced down and confirmed his suspicions and more. He was sporting a rather impressive erection, yes, and there was no way to avoid noticing that Suppa was as well. “Y-yes, a rather impressive success I suppose.”
       
       Suppa looked down as well, catching Gibson’s eyes briefly when they both lifted their heads. Embarrassed, however, he couldn’t keep his eyes locked for long. He dodged Gibson’s blushing look by turning aside with a shy, quiet, “Garff….”
       
       After that little exclamation there was a palpable, frankly painful silence while Gibson waited for the frog to look back at him. There was at least one attempt, but shortly after turning his eyes, Suppa just turned his head the other way. Gibson’s hand even dropped to the frog’s back to allow the turn, when he could have easily stopped it with a touch of guidance.
       
       Recognizing the rise in tension, Gibson averted his eyes as well, enough to allow himself to speak comfortably. “Ahem… Perhaps we should move on to the next experiment then.” Cautiously, he reached out a leg and wrapped a foot around Suppa’s hip, pulling frog just an inch closer. When he glanced up to check on Suppa, Gibson was a bit taken aback to see a rather stunningly bright smile shining back at him. 
       
       The monkey was even more shocked when Suppa wrapped his flippers around his shoulders and moved even closer. The feeling of the cold flippers would have been strange enough, but the sudden rush of cold against his groin as Suppa’s body at last collided with his was almost enough to take his breath away. “I think that’s a wonderful idea, Primate Gibson.” Suppa’s grin was infectious as he spoke, and Gibson found himself smiling right back at him. For just a second, the room began to warm a bit, and the monkey couldn’t help but notice his cock was beginning to twitch with anticipation. 
       
       However, that second soon passed. After the warmth of the smiles and the odd feeling of having their bodies pressed together had it’s time to linger, the pair realized they were stuck in another painful silence. 
       
       “So… yes,” Suppa was the first to speak up this time, his eyes darting curiously over the primate’s body. “W-What sort of experiment were you proposing?”
       
       Gibson attempted to follow the frog’s gaze, but soon found his own eyes were darting around Suppa’s body as well. Eventually they settled once more on his lover’s groin. Somehow, his body had reacted ahead of him, he realized, as he noticed both legs were now wrapped around the frog. “I may…” he coughed as his legs once again moved without his explicit directive, this time pulling themselves up Suppa’s back a touch, and pushing Gibson’s rear just a touch nearer the slimy shaft. He averted his gaze from the embarrassing sight, and locked eyes with the frog once more. “I might have a few hypotheses.” 
       
       The monkey’s hands shook as he set them on his partner’s shoulders and pulled himself even higher, up to Suppa’s stomach. Suppa’s shaft slid directly across his asshole as he did. It was entirely intentional on Gibson’s part, but the feeling still nearly sent him into convulsions. No matter how liberal he’d been with lubricant before, he’d never felt anything quite so slick down there. 
       
       After the slimy shaft slid out from under him at last and slapped against his tail with an audible squish, Gibson did finally give in to the convulsions. His body recoiled and he pressed his forehead against Suppa’s. He didn’t remain there for long though. The flippers on his shoulders began to gently roam his body, and one maneuvered its way cleverly right under his chin, just as the other flipper rather uncomfortably began moving around the slime on his rear. 
       
       “I think that will prove to be a fruitful test.” Suppa lifted the primate’s head away from him, and once again coaxed Gibson into a warm smile. Though this time it wasn’t enough to distract either of them. Suppa’s flipper quivered just as much as Gibson’s hands. The frog’s smile was even tainted by a bit of drool hanging just left of his lip that Gibson couldn’t help but spot. The mutually assured humiliation was somewhat comforting. 
       
       Gibson nodded against the grip on his chin. “R-right. Then no more time wasted, yes.” Suppa returned the nod, and his flipper moved from Gibson’s rear. Before the frog could reach for his penis, however, his flipper was callously smacked away by the monkey’s tail, which proceeded to wrap around the shaft instead. 
       
       There was just one more moment’s pause as Gibson blushed, embarrassed at his own eagerness. Suppa’s eyes went wide for just a moment before they narrowed into a knowing smile. 
       
       Rather than suffer that smile for long though, Gibson lowered his face again into the frog’s neck and decided to give in fully towards his eager wanting. His tail maneuvered Suppa’s penis adeptly, and a deep breath allowed him to finally press against it. 
       
       Both Gibson and Suppa let loose a brief gasp as the primate was penetrated. Suppa slid in easily, almost too much so. The slick cock was nearly halfway in in all of one single motion, only stopping because Gibson held so tightly to his lover’s back. And to make things stranger, the cold feeling felt even more intense on the inside. It was almost entirely overwhelming. Gibson had to pull away from Suppa just for a breath of air to stifle the chill rushing up his spine. 
       
       Unfortunately for Gibson, he needed to take in quite a lot of air to combat that chill, leaving him no choice but to actively pant in front of the frog, mouth fully agape. Even with the rush of oxygen the best he could manage was a sort of equilibrium. The chill was still foreign, as was the rest of the curious alien shaft. However, with some management Gibson was able to keep the sensation to merely his spine and rear, and when it contrasted with the attempts his body made to warm itself, it was genuinely pleasant. 
       
       The monkey’s grip eased, and he allowed himself to slip further down onto his lover. He shut his eyes and focused on the sensation of Suppa’s penis. It pulsed along with the frog’s own breathing, and the frog pushed it deeper while letting out a croak. Gibson took a particularly intense inhale to match the first thrust that was out of his control. 
       
       He would have gone on with more gasps, but the monkey had let his guard drop entirely, and his lover was becoming too passionate to resist taking advantage. Gibson’s second gasp was interrupted by another revolting invader. Suppa’s tongue probed his mouth suddenly, and with his gasp Gibson nearly swallowed it. He was forced to swallow the slime that it brought, though, and the chills that came with it caused his eyes to shoot open.
       
       Suppa’s lips followed after his tongue. The frog locked his primate lover in an embrace just as the energy left his limbs, sending them sliding limply over Suppa’s slick torso and finally landing at his sides. Though his body drifted off, Gibson’s mind was racing. His eyes tried to focus as he thought about everything happening in the moment. 
       
       The tongue in his maw was slick and covered in some sort of foul mucus. It tasted bitter, and it felt like swallowing a worm over and over again as it slid across his tongue and down his throat. A bulb at the end was notable for marking the end of each of Gibson’s breathes when it went down and pulled back, nearly making him gag at each motion. However, through it all Gibson found himself still sucking on the tongue, pulling it down almost as if he were trying to swallow it permanently or suck the mint flavor clean off it. Some of it was driven by instinct he recognized, an effort to keep Suppa close while the rest of his body was failing him. However, the fact that he was enjoying both the bitter taste and the chill that accompanied each swallow confounded him utterly. 
       
       A similar confusing sensation probed below. Gibson relished the feeling of his rear being filled, and he was more than familiar with the sensation of something pressing against his prostate. However, he had not expected to love it so much more now. Now that he was in control, Suppa was fierce and precise. The slick shaft allowed him to move quickly, but any misstep would surely loose it from his lover. Neither he nor Gibson could stand such a break at this point, and Suppa was doing an admirable job of ensuring that wouldn’t happen, even as he rapidly pounded at the primate’s hole.
       
       Under normal circumstances Gibson would have slowed at this point. He could feel an orgasm approaching. It wasn’t deliberate like usual, and with the weakness in his body, the best he could do to guide himself to it now was beg. Even that option was lost to him with the tongue in his mouth. So, he sent the message to Suppa as best as he could by steadying his breath and holding tightly to that tongue. 
       
       If Suppa got anything out of the action, the message came far too late. The orgasm struck with a power that made Gibson’s limp muscles go stiff and shake. The heat wracked his body painfully as every sensor in his nether regions lit up. Suppa still didn’t stop though, merely slowing, and Gibson was painfully aware of each thrust now. It was invigorating enough for him to almost lose sight of every other sensation. He barely noticed when the tongue finally pulled free from his mouth. 
       
       “G-garff…” Suppa seemed to swear as he pulled away from his primate lover. Gibson watched as the frog swelled up with a vulgar croak. Time was dilating now, even as the senses continued to flair. It was fascinating watching the body swell and recede while Suppa’s thrusts became more erratic. Gibson hardly realized it when the frog came, only when the motions stopped.
       
       Senses came back slowly, seemingly flickering to life while he watched Suppa’s breathing return to normal, and for the time to start moving in normal motion again. The limbs that had been stiffened during orgasm were allowed to go limp once more with a sort of chill, one that he was finally getting used to. 
       
       “My… my word.” Gibson rolled his head around. He wondered momentarily when he had fallen to the ground, and how he had managed to lose all spatial awareness in the act. His hand curled into a fist while he watched. Losing a touch of sensation was not new, but this was more intense than usual. Synapses were clearly still flaring. 
       
       As if to confirm his thoughts on the matter, something reached down to curl around Gibson’s head, sending a brief shock of alarm before he realized what it was. It was slimy, but tactful, and very deliberate even as it forced him to turn back to the frog. Suppa was smiling down on him, with his eyes at least. With his tongue coiled around Gibson’s head it was difficult to read any more into the expression. 
       
       Gibson did so, however, hypothesizing that the slight lift of a brow was a signal for approval. “That was… most enlightening.” The monkey reached up and stroked his lover’s face. “However, I get the sense we may need a few more tests, regardless.”
       
       Suppa’s eyes lit up after that. Though he couldn’t say much, a nod of approval got his message of agreement across just fine. And Gibson was happy for the silence anyway. If he could choose, he would have bathed in that chill afterglow for some time. 
       
       However, someone else just had to ruin it. “You better share that paper when you get it published, Professor.” The pair turned at once to spy a pair of colorful peeping toms right at Gibson’s door. The red monkey was smirking quite wildly at the pair, while the green monkey beside him was merely wide-eyed in seeming shock. Sparx followed the smirk with a shrug and an eye roll. “Then again, maybe the rest of us aren’t as interested in gross alien mating rituals as you are.”
       
       Gibson tolerated neither Sparx’s sarcasm, nor Otto’s wonder. While his intercourse had been relatively quiet thanks to the kiss, the Super Robot soon rang out with more than enough screams to make up for any bravado he’d lacked.