1 definition by Rosenblum muff

Top Definition
a female boner, usually resides in the walls, when a female sees a provocative image her vagina walls will swell up causing her to get a fattie
yo, I could totally tell that Kim had a fattie by the way she was walking
by Rosenblum muff June 02, 2010

Mug icon
Buy a fattie mug!