Flappin

A person who continues to speak without any real knowledge and thinks they know exactly what they are talking about.

Boa yo ass jus flappin now Lebron not winning a ring with the lakers

by AJ_2KYT November 24, 2018

Trouser-Flappin'

When you are standing next to a speaker at a concert or a party and the power of the music makes your trousers move.

Happens more with bass bins. Coined by DJ Nark.

The music was trouser-flappin' last night! Whopper tunes!

by theresamonsterintheparasol May 13, 2009

Mud flapped

The act of having your balls farted on.

My wife mud flapped me last night.

by nrourk February 27, 2011

flaccid flapping

Flaccid flapping is when a male can't get an erection during sex and proceeds to rub his flaccid member on a girls vaginna. This is called flaccid flapping.

Jenni asks her best friend...
"So did you and Tanner hook up last night?"
"Hahahaha all I got was a lot of flaccid flapping!!"

by Midnight Kitty November 22, 2013

Hand Flapping

Some children with autism “hand flap” as a self-stimulatory behavior. Other self-stimulatory behaviors sometimes seen in children with autism include rocking and spinning. These behaviors help them calm themselves or regulate their emotional states. Children may also do it when excited or upset, and it can be very hard to distract an autistic child away from their self-stimulatory behavior.

My kid was hand flapping so hard last night that I think his elbows broke!

by SamDeHam March 14, 2017

Mud Flapped

The butt version of motor boating

He stuck his face in her ass and mud flapped her

by Notyourmom May 3, 2015

lips are flappin

When somebody can't stop talking

Ya Ya she is awake her lips are flappin

by slk1 November 11, 2009