The act of Pooping on a toilet and Masterbating at the same time, with the goal of simultaneous climaxes of both pooping and masterbation. remember Poosturbating is not just a mans activity.
Timmy S. was in the bathroom for a long time, we heard moans and he had his computer with him. He'll never admit it but judging by his relaxed manner afterward everybody concluded he just finished a poosturbate session.
by timmy sizzile November 9, 2009
by R Pontin August 6, 2009
Alex said he just had to take a dump but we know he was poosturbating since Courtney just bent over.
by Cheatachu April 3, 2008