I've been in the jungle for a while, looking around for any trace of Predator life. Suddenly, rustling stops me in my tracks.
"Mmm... I'm horny, mister..." said an unknown voice. A boy waddled up to me and nuzzled his face into my thick bulge, his cubdick belching out a thick wad of pre as he inhaled my musky scent from my pants.
Gasping in surprise and lust, I drag the boy over to a more concealed area - where I can properly take care of my lusts with no fear of being caught.
"You say you're horny, boy? I can play with you, if you'd like." I lift an arm up, exposing my unkempt and sweaty pit of hair to the big-dicked cub.
"Y-yes sir! Mmm your pit looks nice." He said, burying his dreaded head deep into my sweaty forest of pit hair, munching and sucking the sweat out of my coarse hairs like a baby whilst nudging his impressive dick against my chin.
"You got a huge dick for your age, boy. You should be proud." I say, stroking my hand over the tip of the cub's huge uncut dick. I press my tongue onto the surface of the tip, as the dick belches out huge wads of precum onto my face. 
"Say, boy, why don't you come and sit on my dick and I can take care of that little problem you have, hmm?"
He nods and straddles my waist, quickly tearing through my pants with his claws and fishing out my sweaty cock from my underwear, rubbing his fat hole around my swollen tip. "M-mister, please...pound me hard...and fill me with your cum! Make me swell up like a balloon!" He cried out needily, slamming his ass down onto my pulsing cock, taking the entire thing into his slutty ass before jamming his face back under my arm, eating out that stinky pit.
I moan loudly as the slutty cub sat his huge, small asshole around my cock with a loud squelching sound. 
I think to myself how much of a cockslut this Yajuitian boy is; which only makes me enjoy him even more.
I grasp the alien cub's torso as he licks my pit up like a baby nursing milk from his mother. 
"Yeah... Y-You're a good boy, aren't you? You love being filled with thick cock like a slutty boy wanting his daddy deep inside him." 
The combination of the boy's eagerness and his vice grip on my cock made me thrust my hips forward - his asshole puffing out as I pull out, and squelching loudly as I thrust back in.
Caught up in lust, I decide to return the favour by dumping my tongue on the boy's big, fat cock - licking around his bulbous head. It convulsed and pulsed under my pleasurable tongue rolling around the thick head, and under the cub's foreskin.
The Yautjacub groaned in response, eliciting a fat wad of pre to gush out into my mouth. It tasted more milky than salty, much to my surprise. 
The cub was trembling and moaning under the pleasures I was giving him, and fullness of having a fat human cock shoved up his rear.
I let my head fall back as I let out a surprising gush of precum into the boy.   Under the trembling and constant moans of ecstasy, I got the impression that the cub knew he couldn't control himself for much longer if we kept this up. 
I felt thick patches of hair underneath his arms and as I gripped him and felt him all over with lust. He panted huskily, looking at me with a shy smirk. His hole had stretched fully around the base of my cock. 
"Y...you're making me feel like a man, mister," he said, blushing.
I wanted to pound that little boy harder.
"You're growing into such a big boy," I say as the cub's stomach bulges as feed him my cock and my precum.
Thrusting heavily into his stretched asshole, I knew I couldn't keep pumping into him dry any longer. I had to fill the boy with my potent seed.
Blushing, I get back down on his cock, this time taking a quarter of the shaft as it pulses and bulges. 
The boy cries out and grunts as the belly of his shaft visibly bulges out with cum, travelling up to his tip before flooding out into my mouth, filling my belly with a huge amount of his thick seed, and that was only the first shot! Several more flooded out of his fat phallus, spurting his milky Yaujtian cream down my throat and creating a small pool of it on the floor. "Yes! Yes! Fill me daddy! Fuck me full of your spunk!" He cries, slamming his cute ass down onto my thick cock over and over, letting out a tiny grunt everytime he felt my fat balls slap against his ass. 
Thrusting my hips wildly in response, I exclaim to the boy: "Here it comes! I'm gonna fill your slutty ass with a fat load!" 
I cry out in pleasure, slapping my fat hairy balls against the boy for one last time - as I unleash my spunk into the lustful boy. The boy gasps as the thick human seed erupts from my tip forcefully. I send at least 5 huge wads of thick, stringy cum into him; his stomach expanding as a result.
As my explosion wanes, so does the cub's, as we soon find that we are sitting in a pool of messy cum. 
As I attempt to pull out, strings of cum loosely fall out fall out from his ass, but not far long - as the boy clamps his ass down back on my now semi hard cock.
"It's warm. I like the feeling... Can we stay like this, mister?" 
"Sure," I said, ruffling his dreadlocks.
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