Using the mobile chronivac modulator jeff changed his father to be attracted only to him, then he made himself visible to Jack.
"Jeff, what are you doing naked in my room??" But Jack was stunned by his attraction to his son, "and when did your penis get so big?.. I mean.. It looks just like mine did before today. I don't know why mine is so small now," Jack blushed but his one inch dick grew hard at the sight of Jeff's new manhood.
Confident that his father was now attracted to him, Jef took charge. "Lay down on your back and put your legs up, dad. I'm gonna lick your ass." Jack was so turned on he found himself obeying his sons orders, desperate for sexual attention from the boy. Jeff watched his new huge cock grow to it's full size as he thought about all the fun he could have with his father.
Jeff brought his young 16 year old face up to his fathers round hairy bubble-butt, and pressed his nose and mouth against his hole. Jack moaned with pleasure as his son began pushing his tounge in and out, caressing his dad's masculine buns with his young smooth hands.
Jeff began to jerk himself off while eating jack out, and with his other hand, he serviced his father's tiny penis with just two fingers. Jack writhed back and forth moaning loudly from his son taking charge of his body. Jeff moaned into his father's ass, as they climaxed together.