The instance of a man unexpectedly getting hit (skin to skin) with another man's penis in a nude bar.
Pat turned around to his buddy at the nude bar and says" Dude that guy just Flap Jacked me with his dick and it touched my hand!
by MGM629 March 8, 2016
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One (pancakes) is good with maple syrup and the other is not.
by skin January 30, 2004
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(NOUN)-

1. An all-around duesch bag that thinks they're tough, but in actuality can easily be knocked on their ass with one punch.

(VERB)-

2. The act of knocking out a duesch bag with an uppercut, causing them to flip in the air like a pancake, or "flap jack."
(NOUN) -
1. "All British fighters are fuckin flap jacks!"

(VERB) -

1. "O.K. That's it! That Duesch bag is getting Flap Jacked!"

2. "Did you see the Bisping Henderson fight??? Bisping totally got Flap Jacked!!"
by Brit-Basher February 10, 2011
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A sex position which a female is mounted and faced forward towards the male. The male then grasps the ass cheeks of the female and bounces it up and down like they were flipping pancakes.
Damn boy I flap jacks the hell out of Tiffany last night. Her ass was flipping like pancakes.
by Jacobthewolf September 7, 2012
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when a women gets kicked in the crotch.
she needs to receive a flap jack for being a dreaded anus.
by Tinkerism February 1, 2018
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A new term used to describe Filipino people. It is not really offensive unless they take it to be. It contains two parts, the first being "Flap" which can be considered the 'other side' of "Flip" (Flip being a regular, shorter way to call a Filipino person), and the second being Jack, which is well, just a normal way to address ANYONE really...

So why does Flap Jack apply so well? The color of flap jacks, or more commonly known as pancakes, comes close to the color of someone originating from/has roots in the Philippines.
-"Hey Flap-Jack"
"Dude... STOP CALLING ME THAT."
-"You rather me call you Asian?"
"NO, DON'T CALL ME ANYTHING!"
-"Not even Flip?"
"NO- well.. fine, Flip is alright..."
-"Flip - Flap, FLAP JACK!"
"GAHHHH!!!"
by A-non-i-mouse May 2, 2006
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When a man slaps his ball sack against his leg to make a snapping noise.
Dude I just had the loudest flap jack; it sounded like a fucking gunshot!
by GANGSTASS December 13, 2009
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