When the GF, wife, or prostitute while wearing a strap-on is reverse-titty-fucking a man so that all he see's is her ass and meat curtains, which happens to look like a bow tie on his neck.
Dude 1: I need to lose weight.
Dude 2: Why?
Dude 1: The wife said the only sex we are having is a reverse bow tie until I lose my man-tits
When your girl reverse titty-fuck a guy. It goes without saying, the she would wear a strapon and the dude is fat enough to have tits. Needless to say, dude also get pegged on a regular basis. Her ass and meat curtains are upside-down and it looks like he is wearing a fleshy bow-tie. It's called "reverse bow tie" because the guy is who titty-fucks a girl.
Guy 1: I need to loose weight!
Guy 2: Why!
Guy 1: My girl only wants to do reverse bow tie.