Bill continued sifting through menus until he found his own wardrobe, "No shit, I could wear the little brat..." Then with a rising feeling in his loins he picked his favorite jockstrap and started the transformation as quickly as possible.
Down in the garage Jeff was complaining to himself and trying to clean as fast as he could to get back to trying out his Chronivac when suddenly his fingers stopped obeying him and the broom dropped to the floor in a clatter. Jeff called out, "Dad, dad!" as he fell to the ground, rapidly shrinking and his skin turning to a cottony white. He couldn't move or breathe and he was staring down at the floor
Bill came in and looked down at his son with a satisfied smile. He bent down to flip him over, looking at the tiny face on the inside of the jockstrap, "Your little program says you're into this shit, so I figured I'd give you the grand tour." Bill stripped down in front of his cotton son, exposing his cock which was starting to chub up at the thought of wearing his son. Bill gave a slow spin, showing off the fat hairy ass his son would soon be supporting. Reaching down, he stretched Jeff out and put one foot then the other through Jeff's straps. The boy's face rapidly rose until it was smashed against his father's cock and balls. Bill and Jeff let out a groan simultaneously. Bill pawed at his crotch like he was the horny teenager.
Bill continued stroking himself through the jockstrap, rubbing his son's face over every inch of his cock until he roared and painted the boy's face in a heavy load. He sat back satisfied, forgetting his son for a few seconds until the boy spoke up,
"D-dad, how long did you set the transformation for?"