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45.
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 01, 2006
 
1.
low hanging, flat breasts resembling pancakes.
When I was feeling up your grandma, I realized she had mad flapjacks.
by Copie Boy November 06, 2002
 
2.
Flapjacks are the condition of a woman having flat sagging breasts, like flapjacks. The type a crack whore would have.
Tammy does not want to show us her breasts, she must have flapjacks!
by Rocco1 December 07, 2003
 
3.
a very saggy, flat looking breast.
she must in her 40's, look at the flapjacks on her.
by sick December 14, 2003
 
4.
breasts that are unatractive in any way, be they saggy, miscolored, wrinkled, or pancake like in nature.
that chik's tits were no good, she was working with some flap jacks.

flap jacks, jacks flapped
by HL Deez February 17, 2005
 
5.
noun; a handjob given to a man with a flaccid, flopping penis;
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.
by Dan and Andrew December 21, 2008
 
6.
Light, fluffy breakfast item; Pancake
Lets grab some Flapjacks from IHOP
by Professor Ryan Bloraney August 04, 2003
 
7.
The female equivalent of being cockblocked. The disruption of a sure thing.
I was going to fuck the cute construction guy, but I got flapjacked at the last minute.
by Krudler123 September 03, 2012