When one defecates in the bathtub, then runs around in circles, creating a current that causes the turdpedos to follow after the person like a torpedo.
Guy 1: Dude, what the hell is that in the tub?!?!
Guy 2: That's a turdpedo!!!
Guy 1: RUN!!!!!
Guy 2: Oh no, they're chasing me!!!
Guy 2: That's a turdpedo!!!
Guy 1: RUN!!!!!
Guy 2: Oh no, they're chasing me!!!
by Poopyhead555 August 06, 2009