Usually performed near the end of sex, the dirty dumptruck is when the women is lying on her front and just before ejaculation you take a shit on your girls back (hence the name 'dumptruck') and the girl will turn around to see what is on her back then you spunk in her eyeball
by Whatismylife43 April 13, 2017
when your laying on your back facing down your girl stands over you turns around bends over standing up and she spreads her cheecks and a big chuncks of shit start falling out ontop or your cock
dirty dumptruck
by danger dane May 8, 2009