Jeff couldn't believe the way his dad just shoved him into his hole, but stopped thinking too hard about it as he became aware of the tight, constricting heat around him.
Fuck, he was in his dad's ass!
Jeff twitched, feeling a bead of pre squeeze out of his mouth.
"How ya like it in there bud?", Jeff's dad laughed, moving his hips so that Jeff slid in and out of his dad's asshole in short rocking thrusts.
Fuck that felt good, Jeff tried thrusting a bit to match his father's movements, but unexpectedly popped out when he misjudged the pace.
"Not giving me a lot to work with there bud, you're so small. Can barely feel you." Jeff's father laughed, pick Jeff up from where he had fallen in the bedspread. "How about we make a few changes, eh? Make it better for the both of us.."
His dad carried him back over the the Chronivac, setting Jeff down into the desk as he pulled the keyboard and mouse close to him and began clicking.
"Hmm. I think we could do to add some length and some girth to yah...get you matching with your dad."
Jeff leaked a little bit at his dad's words, feeling a little embarrassed by how small he was.
His dad clicked around a few more times, humming here and there to himself as he made a few more adjustments to the settings in the screen. Jeff wished he was able to make them out, suddenly worried about the changes his father was making.
He must've made a sound, because his dad's hand came over to him, petting gently.
"Don't you worry about nothin' your ol' da will take care of ya", he punctuated with a tug at Jeff's balls, before collecting Jeff back into his hand and bringing him back towards the bed.
There was a moment of jostling around before his father pushed his cock face up against his hairy hole again, Jeff moan out as he slid back inside it's clenching warmth. He was a bit confused though, he hadn't felt any changes happen to his body and his dad had taken him back into his hole with no effort.
He wasn't going to question it though, letting out a happy little blurt of pre as he twitched against the press of his dad's ass around him. He could still enjoy this, size didn't matter to him!
He was thrusting minutely between his dad's cheeks, trying to get some rhythm going in this different position, his dad had layed down on his back to slide Jeff inside this time, rather than sitting on him and he was finding it a bit hard to move without a grounding force.
But then his dad gripped him around the base of his disembodied cock, balls mashed in his dad's palm and his dad began to manually thrust Jeff into his hole.
"You ready there kid?" Jeff's dad panted, pulling Jeff nearly all the way out of his ass before slamming back in.
Jeff had to wonder at what he needs to be ready for when he felt it, a low tingling spreading along his length and cock head that was sending shockwaves of pleasure through Jeff, a stream of pre oozing from him continually at the strange sensation.
He was growing!
He could feel it now, he was slowly thickening and being fucked further and further inside his dad's ass with each thrust. It was unbelievable and he couldn't help but twitch in excitement, cock head jerking into a fleshy nub that suddenly cause his father to clench down hard on him, grip tightening along the base of Jeff's cock.
"Guhh, fuck yeah boy," Jeff's dad grunted, angling Jeff to hit that same nub over and over, "that's my g-spot, fuck yeah."
Jeff wondered at that, enjoying the feel of the little nub rubbing against his head, it felt good!
Jeff could feel that he was still increasing in size, and couldn't believe how good it felt to have the pleasure spread out across him.
Feeling like now that he had a bit more to work with to gain momentum, without having to worry about slipping out, Jeff wriggled in his father's hold has he worked to drive himself deeper and harder.
Sure enough, now that he had some length Jeff was able to pick-up a good pace, thrusting powerfully in and out of his dad's hole, delighting in the way his dad's walls spasmed around him, trying to accommodate Jeff's new size and his forceful fucking.
Dad's really do know best!