Bobbing your legs back and forrth causinfg the excess fat of your thighs to smack together in the hopes of achieving "discreet," public masturbation
by levaus January 7, 2014

The sexual position involving two guys and a girl where the girl is held suspended in between the two men, tossed up into the air, and either one of the men try to catch the woman, in either hole, on his penis. Painful for everyone involved.
by tennispl123 December 9, 2008

The act of flipping a womans breast up, accompanied by the word "Flap!", then slapping the breast sideways while saying "Jack!".
by Doodwashere January 22, 2009

Damn girl, you're flapjacking again.
by AlexaaMmeghan June 12, 2011

by Kelsthebom July 15, 2019

by Jacob Perrotta December 28, 2004
