flappening 

When the chickens come home to roost. I.E When the weak hands from Shitcoins in Crypto get shaken out into a stable decentralized ecosystem.

Trader 1: Damn it Bitcoin Cash! Why didn't you moon? The market Cap is sinking!

Trader 2: See, we told you the flappening is happening.

Trader 1: Damn Bitcoin Fork isn't up to par, Ill just stick with BTC/LTC/ETH.

flappening by Patrickftw2 March 9, 2019

What's fappaning

A mildly mocking question indicating you believe someone is masturbating.

Hey bro, what's fappaning in the toilet? Hahaha!

What's fappaning by I, Wreckerrr November 4, 2016

raven flapping 

The act of cawing and flapping your arms like a raven while penetrating a female (or male) in the ass. It is key to caw louder the deeper you go to achieve maximum raven flapping. After you have blown your raven load you position the female (or male) on all fours and “peck” your semen out of their ass, letting out a loud raven-like coo after swallowing.

Rob was raven flapping the shit out of her last night after that big wedding. Thomas looked on in admiration and slight jealousy.

raven flapping by Fisty bro 1 September 29, 2018

stiffy flapping 

Combining Viagra and Redbul and having sex in order to increase intensity and the length of sexual encounters.

That girls walking like she was stiffy flapping all night last night.

stiffy flapping by JakeMontana February 12, 2017

Fappaning 

Fappaning is an occasion for masturbation to occur.

The porn movies lead to a great fappaning in the basement.

Fappaning by I, Wreckerrr October 8, 2016

Sack Flapping 

The sound your ballsack makes when pounding a tight slizz from behind; a good sack flap goes to a beat and makes a soft thumping noise... & can lead to minor bruising and irritation of the stomach region of the partner whos tight slizz or smelly balloon knot is being ravaged

Kelly: "Whats that on your stomach?"
Sara: "I had a good Sack flapping last night"
Kelly: "Oh i got sack flapped last wednesday; and his beanbag bruised the hell out of my tummy "

Sack Flapping by Capel & Droughton November 19, 2011

The Fappening 

The day in which the Great Journey commenced as foretold in the Great Prophecy, in which hundreds of nude pictures of various female celebrities, whose bodies many men have salivated over, were leaked on the Internet. As a result of a leak of such biblical proportions, "The Fappening" commenced, which implies that thousands masturbated to these leaked pictures.

8-31-14, Never Forget The Fappening.

Sam: Dude, remember when all those pics of Kate Upton and JLaw went viral?

Tim: Yeah man, I took part in The Fappening.

The Fappening by YourBestWorstFrenemy August 31, 2014