Yesterday had been Robbie's twelfth birthday, and the standout gift for the little wolf cub had most definitely been his new smartphone! Now he could download and use apps and watch videos and listen to music and call and text and all the other cool things people did with smartphones!
     And now, on this Saturday morning, he found an interesting app that he wanted to test on someone...
     He heard a knock on his bedroom door. Sitting up in his bed, he called out "Come in!" and his father, a tall wolf with black and gray fur opened the door, smiling down at his son.
     "Hey, champ! I know your birthday was yesterday, but we got some special chocolate chip birthday pancakes for breakfast today anyways. Well, your mom got them, that is." He chuckled, scratching at his hip through his pajamas. "I helped, though!"
     Robbie grinned wide at his dad. This was a perfect time to test this new app! And there would be pancakes afterwards! "That's great, dad! Before we go, I saw this funny video I wanna show you!" He tapped his phone screen, turning it away from him to face the older wolf.
     "All right, let's see what... uh..." The wolf's words slowed as he found his eyes glued to the phone's screen, a spiral holding his gaze. "What's uh... what's funny... about..." His posture slouched, arms hanging limp at his sides.
     Robbie's eyes were wide with wonder. It worked! "Dad? Can you hear me?"
     "Yes..." Came his father's slow response.
     The cub giggled as his mind went through hundreds of possible ways to have fun with this, but quickly blurting out, "Pull down your pants!"
     "Okay..." And with his eyes still watching the spiraling screen, his dad hooked his thumbs into his pajama bottoms and tugged them down.
     At first Robbie had to stifle a laugh at how easy it was to make his dad do something so silly, but then the cub's curiosity was piqued as he noticed his father's penis, red and poking out of his sheath a little.
     "Uh... dad? What's that?" He asked, pointing to his father's crotch.
     "My cock..." Came the simple answer.
     "But I thought that was your penis?"
     "It means the same thing..." Each word took longer for him to pronounce than usual as his mind was occupied with the phone's screen. "Cock is... the adult word..."
     Curiosity gripped Robbie, looking at the strange, twitching thing between his father's legs. "Uh... c-come here, dad."
     "Okay..." He mumbled, shuffling over with his pajamas around his ankles.
     His shaft was just at Robbie's face height. "H-here, hold my phone so you can still see it." The older wolf obediently took the phone and held it, still captivated by the spinning swirls.
     Robbie's hands trembled slightly, something inside him feeling incredibly excited to reach out and touch his dad like this. His fingers brushed the red flesh of his dad's cock, causing it to twitch.
     "Mm, what are you doing?" His dad drowsily asked.
     Robbie froze for a moment. "Ummm... t-touching your pen- I mean, cock?"
     "Oh, all right..." His father nodded, accepting the answer.
     "So... it's okay for me to touch your cock?"
     "It's okay for you to touch my cock..." Hearing his father repeat it like that made Robbie's insides feel tingly and happy, especially between his own legs...
     "You, uh... you like it when I touch your cock."
     "I like it when you touch my cock." His father repeated. Robbie smiled as he started to understand the power he now held over his dad. When his father's cock twitched again in front of him, his curiosity sparked once more.
     "Hey dad," He asked, gripping the shaft and blinking as the red cock twitched again, starting to grow bigger in his hand. "Why's your cock getting bigger like this?"
     The wolf moaned a little as he responded, "It does that because I'm horny..."
     "What's horny?" Robbie asked, delighting in how his dad's cock felt when he squeezed it.
     The squeezing drew another moan from the wolf. "Horny, mmm, means you like something a lot... It gets you, mff, excited between your legs..."
     The cub shuffled on the bed as he felt that same excitement. He reached down, pulling down his own pajamas to let his small cock free. He looked down at his own penis, wide-eyed at how it looked like his father's but smaller.
     "What uh... what makes you horny, dad?" Robbie asked, squeezing the base of his father's cock as his other hand squeezed the same spot on his own shaft. They both shivered from the pleasure.
     "Mmf, your mother when she's naked... showing off her tits and pussy... getting a handjob from her... my son touching my cock..."
     There were apparently lots of thing Robbie needed to learn about, he thought as he kept squeezing the cocks in his hands. "What's a handjob?"
     His father moaned. "It's... when you put your hand around a cock... and stroke it back and forth until they cum..."
     The cub's hand began to stroke up and down along his father's long, hard cock, bumping against the knot at the base. "What's that mean?" He asked, his breathing growing a little heated as he began stroking his own tiny shaft.
     "C-cumming is when... mmm, you get so horny... that your cock f-feels really good, and shoots out, mmf, white stuff called cum."
     The poor cub's head was swimming with all these new words and information, and something else he wasn't familiar with yet. But his instincts told him to keep moving his hands along the two cocks, making him and his father feel good...
     "I-it feels really good, dad..." He muttered, panting as he could feel something building up inside him.
     "It feels really good..." The older wolf moaned again, his cock pulsing in his son's hand, hips bucking as cum spewed out onto his son's surprised face, some landing in his open mouth.
     The surprise made Robbie squeeze on his cock as he stroked, drawing a little shuddering moan as the cub shot his first load onto his belly, the cum sticking to his fur. He stopped stroking, panting as his hands rested. He tasted the bit of his father's cum that had landed in his mouth, finding it a strange new taste... a taste he liked.
     After a moment of silence, Robbie asked, "Dad, what do you do with the uh... cum?"
     The older wolf, still breathing heavily and staring at his son's phone, said "It makes me horny... to lick it up..."
     The cub shivered, feeling that strange new excitement in his groin at the thought of his father licking up the cum from his face. "O-okay... dad, I'm gonna take my phone away, and when I do, uh... this will all be normal. And..." He bit his lip, looking up at his father's face, the older wolf's eyes glued to the spiraling screen. "You'll lick up the cum off me."
     The older wolf shivered. "This is all normal..." His cock twitched in his son's hand again. "I'll lick up the cum off you..."
     Robbie waited a few seconds, just to make sure the order stuck, before reaching up with his hands, taking the phone away from his father's arms, which fell limply at his sides again, and turning off the phone screen.
     He held his breath as his dad blinked, his hands coming up to rub his eyes. He opened them again, looking down at his son's cum-covered face. He let out an unexpected laugh.
     "That sure was a funny video, son! All right, now lets get you cleaned up for breakfast..." Robbie's breathing grew heavy again as his father, still with his pajamas around his ankles, knelt down and leaned in close, his broad tongue coming up and dragging along his son's muzzle, licking up the warm cum left there.
     "Mmm..." His father moaned as he licked his cub's face clean of his seed. Robbie could hardly believe it was happening, the arousal building inside him as his little cub cock grew hard again, his hand squeezing and stroking it slowly.
     All too soon, he had finished with his son's face, leaved it wet with his drool. "There. Now..." Robbie squeaked as his father's head moved down.
     "Wh-what are you doing, dad?" His voice trembled.
    "Licking the cum off my son. This is normal." His tongue licked up on Robbie's belly, sucking up his son's first load. "Mmm, you taste good... Some lady is gonna be very happy with you! Or man!" He chuckled as he continued licking.
     The cub gasped and shivered as his father lapped up his cum from his belly, the tongue moving down until his dad was licking and sucking up the cum sticking to his shaft. His dad gave a muffled moan, his lips wrapped around the tip of his son's cock, before pulling off with a small pop and standing, his own cock standing fully erect and leaking a bit of pre.
     "All right, son! All cleaned up, now are you ready for some amazing birthday pancakes?" He asked, smiling down, tail wagging behind him.
     Robbie was panting, leaning back and still shivering as his little cock twitched, still shining with his dad's spit. "Y-yeah... I'd l-love some breakfast, dad!"
     The older wolf chuckled, reaching down to pull up his pajamas before Robbie interrupted. "Um, l-let me get that for you, dad!" The cub slid off his bed, bending down to pull up his father's pajamas around his legs. As his hands reached his father's waist, he looked up at his face, hesitating just a moment, before gripping his dad's still throbbing cock with one hand and giving it a stroke.
     His father smiled, making a low growl of happiness as his member throbbed in his hand. "Mmmm, I love when you touch my cock..." He mumbled. Robbie felt his cheeks heat up a bit as his cock bounced with his hammering heartbeat. The cub leaned down, giving the tip of his dad's cock a kiss before pulling the pajamas up over them.
     His dad chuckled, reaching down to ruffle his son's hair. "Thanks for that, son. Now make yourself decent and get to the table! We'll be waiting!" And with that, he turned and walked out of Robbie's room, leaving the cub standing with his cub cock throbbing and his mind swimming in new feelings and strange, but alluring new thoughts.