flip flaping the jacking sack 

Choking the chiken or any form of self plesure or masturbation involving your hand, lube ,and your favorite playboy mag.

i'm flip flaping the jacking sack.

flip flap the jacking sack

flip flaping the jacking sack by wakety sacety May 8, 2009

flapping the flag 

The act of masturbating

Sorry I missed our meeting, I was flapping the flag.

flapping the flag by JustYourAverageUrban January 15, 2019

flapping the sesh 

an annoying phrase used by others to make you feel bad when you are invited to do something but don't do it

when you didn't go to something when invited to do it

other word for letdown

toby i dare you to jump that fence!
nahh man
you're flapping the sesh!

flapping the sesh by high 4 May 31, 2011

flappin the goose 

trying something out or testing something. Another saying for "testing the waters".

I am flappin the goose with this new job I have.

flappin the goose by PizzaNiffin June 21, 2011

flapping the beef

When a fat girl masturbates

I was watching porn and i saw a video of a 400 pound woman flapping the beef

flapping the beef by bryceb476 April 24, 2016

flapped the hell out 

When your super car is in top gear.

“How’d you loose your liceance?”
“I was flapped the hell out when I saw the rollers!”

flapped the hell out by Overloadford January 14, 2018

Flapping the flag 

Jacking off.

"-Yo,did you know that Johnny is flapping the flag under the showers?
-Seriously?"

Flapping the flag by TypowyLaman January 15, 2019