The feeling of emptiness in one's stomach after one has performed sexually (degree of munchies depends on the level of activity)
Wow Katie, that was awesome...hey, can we get a pizza? I got the fuck munchies
by Birdcage June 10, 2008
Classed as the same term used for Munchies but refered to sex
I have soo got the fuckmunchies right now.
by Thorpheus October 10, 2009