Dude! Why is that turd trail in the front of the toilet bowl? Somebody must have done a reverse mount!
by Nook Nook December 6, 2007
When a girl is giving you a blowjob and when you cum she vomits all over your dick but then not only swallows all the cum but the vomit too.
I was getting head from my girl last night and when I busted a nut it made her puke but then she went reverse mount Vesuvius on me.
by DrRobot July 17, 2015
Defecating on the back of your partner's head while she's asleep, and molding the poo into a face with your hard cock
Guy 1: After Diana fell asleep last night I gave her a Reverse Mount Rushmore.
Guy 2: Did she like it?
Guy 2: Did she like it?
by redexplosion November 6, 2008