When a light skin boy " Sammy Knepp " goes to the bathroom take a shit and masturebates at the same time.
Ex: a guy named Sammy knep was pooperbating in a friends house and they opened the door and saw him they where terrified that they were going to get pooperbated on
Masturbating while defecating while you insert your finger into your anus.
Poopjacking with a flare
I caught jack pooperbating in the office restroom earlier. He had shit all over his fingers
Pooperbate
Poop jacking
When a guy tells his girlfriend he has to go take a poop but masturbates to porn after wards on the toilet.
"Fred always says he has to go take a poop and takes so long, he must be pooperbating!"