Top definition
v. Close relative to the "Filthy Folletta" and sometime performed afterwards, A Reverse Filthmosis is performed when a drop of sweat that has beaded down a heavy set woman's ass crack and is caught by the tongue.
Dude I totally gave that huge bitch a Reverse Filthmosis.

You should have seen the look on her face when I gave her that Reverse Filthmosis.

Mom: "What did you learn in biology today?"
Boy: "Reverse Filthmosis."
by fattony8675309 March 21, 2009
Get the merch
Get the Reverse Filthmosis neck gaiter and mug.
Apr 21 Word of the Day
I've been jabbed
by Francesco II March 20, 2021
Get the mug
Get a jabbed mug for your papa Manley.