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
"flapjacking!" (v.) - to engage in sexual interaction with another. (2) Usually follows cupcaking and/or cheesecaking.
by Mahlet, Sable December 07, 2006
The act of flipping a womans breast up, accompanied by the word "Flap!", then slapping the breast sideways while saying "Jack!".
by Doodwashere October 12, 2008
Damn girl, you're flapjacking again.
by AlexaaMmeghan May 19, 2011
by flyinghorses January 03, 2011
when some douchebag is driving like a dick and you stick your bare ass out the window and slap it while yelling flapjack as you pass him/her up and your driver hits the horn. can be done on either side of car but works best when you are turning left and they are stopped at a red light. flap jack flapjack
by Joe Jenco a.k.a Sir FlapJack October 09, 2007