The act of stimulating the anus by excreting feces partially out of one's own ass, then allowing the natural pressure of the anus to suck the feces back into one's own rectum. The process is repeated to one's satisfaction.
Dude1: So I've been trying out assturdbation lately.
Dude2: Oh man, I tried that once, it didn't work for me. Too much leakage.
Dude1: Yeah man, you've got to change your diet to avoid all types of fiber.
Dude2: Oh man, I tried that once, it didn't work for me. Too much leakage.
Dude1: Yeah man, you've got to change your diet to avoid all types of fiber.
by gfaisjdfjjwejo July 8, 2016