You grab jack's boots, the sweat and musk from the sides sticking to your hands.
"I don't think he'll mind if i have a quick sniff , right?" you look at jack's slobby self, and get lost in deep. horny thoughts, as you put his left boot up against your face, all his sweat, musk, and dirt being absorbed into your skin.....
Your clothes suddenly changed to be oversized and similar to Jack's, though you dont notice, just like you don't notice the hair growing on your legs, or your cock and balls inflating to jack's size,and your feet growing to be the same as jack's.
However,you do notice that the boot is stuck to your face. "WHAT THE?!?!?!?!" You notice your voice is deeper,and has an accent, but you suddenly remember your voice was always like that, as stubble grew on your face, and your grew another chin. your hairline receeded into your head, and your chest,arms,and crotch were suddenly covered in thick brown hairs, and your intelligence and memories faded, and memories of drinking, playing sports, and dropping out took their places,as the stubble exploded into a bush of a beard.
The world faded out,but then back in, but Jack wasn't their anymore, wait what are you saying? Ya big dumb dumb, you are Jack.
You sat down on your couch,drank a beer, and watched the game