A Dirty Curty is similar to a Dirty Sanchez, however when doing a
chick doggystyle and sticking your finger up her
ass, one does not give the chick a reacharound shit mustache but instead he gives himself
the shit mustache.
Dude, we could see
Joe railing this chick from behind through his bedroom window, and he totally stuck his finger in her
ass and gave himself a Dirty Curty.