Flapjacks are the condition of a woman having flat sagging breasts, like flapjacks. The type a crack whore would have.
by Rocco1 December 07, 2003

A male with an erection, lies on his back while a second erect male inserts the penis of the first into his anus then lies back. A third male inserts the penis of the second into his anus and lies back forming a stack. A three man stack is known as a short stack, A stack of four or more is known as a full stack. Full stacking has the added benefit of asphyxiating the bottom participants. The flapjacking experience can be enhanced by using maple syrup as lube and having each participant massage the balls of the person above.
Mark, Mike, Jason and Joel were planning a full stack flapjacking session last night but Joel didn't show, so the three had to make do with a short stack.
by crankbait July 27, 2012

by jjstl April 27, 2010

by Krudler123 September 03, 2012

by Professor Ryan Bloraney August 04, 2003

by sick December 14, 2003

Even though I was not fully hard, I still got a rocking flapjack.
Last night this girl was flapjacking me for like 20 minutes.
I got flapjacked by this fat chick in the car last night.
Last night this girl was flapjacking me for like 20 minutes.
I got flapjacked by this fat chick in the car last night.
by Dan and Andrew December 22, 2008
