dirty thirds
to be the third guy to have unprotected sex with a chick in a short period of time. High risk of STD's since there's 2 guys and the girl's juices floating about. worse than sloppy seconds,but better than floppy fourths
Joe likes messing with the cheap prostitutes that don't like condoms towards the end of the night and usually ends up with dirty thirds.
dirty thirds by Bobert Mcbobert June 25, 2006
Get the dirty thirds mug.