A male or female who's jaw dislocates multiple times while performing oral sex.
Carl: What happened to you last night?
Frank: Picked up a hooker for a little blow and go.

Carl: How was it?
Frank: Rough. Bitch must of had her jaw busted by her pimp. She was a Flap Jaw. I kept thrusting it out of joint.
by Eaton Holgoode May 3, 2015
Get the Flap Jaw mug.
A male or female who's jaw dislocates multiple times while performing oral sex.
Carl: What happened to you last night?
Frank: Picked up a hooker for a little blow and go.

Carl: How was it?
Frank: Rough. Bitch must of had her jaw busted by her pimp. She was a Flap Jaw. I kept thrusting it out of joint.
by Eaton Holgoode May 3, 2015
Get the Flap Jaw mug.
A person who stands around in grocery stores or other places talking to people and your trying to get by them, they acknowledge you behind them so they ignore you and just keep on talking. Or when your talking to somebody but they don't give you time to speak they talk over you because what they have to say is more important than what you have to say.
in a sentence: You just keep jaw flapping about whatever, I have someplace to be and have important things to do!
by Nite_Wolf October 1, 2020
Get the jaw flapping mug.