Flappy Jacks 

When you finger a girl's kutch and find out she's not circumcised. To be more specific, the outer fat tissue of a female vaginal wall.

Shit, she's not a virgin? She's been fucking other people? You mean she had flappy jacks?

Flappy Jacks by asdf66667878 December 20, 2014

flappy jack

When a fat chick rolls her arm fat (or flaps) over a man's dick and proceeds to jack him off

"Did you get sex last night?"

"No, I just got a flappy jack."

flappy jack by TheOneAndOnlyHippie December 8, 2014

flapy jacks 

fat people jumping jacks.

Fat camp director:all right kids do some flapy jacks.

Fat kid:slap slap slap*(fat on kid is slapping himself)

flapy jacks by Mr. Maaan August 1, 2012

flappa-jacka 

noun: descibes a smallish breast that basically lies flat on one's chest in a saggy sort of way. not cute.

"oh my god--my old boss had the scariest tits--there were so flappa-jacka."

flappa-jacka by perkin March 11, 2003

flappyjacks 

Another word for gigantic boobs of a fake chick.

That girl has HUGE flappyjacks! Moooooo!!!
Flappyjacks or blue waffles???
Want some syrup with those flappyjacks???

flappyjacks by 54312929 November 13, 2011