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 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?