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!"
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