Flapping

The art of smacking your erect penis against your inner thigh to the point of climax.

"I walked in on my brother flapping and listening to the audio of a slaughterhouse."

"I had to rip out all the leg hair on my thigh because they were covered in cum from me flapping."

by theflapmaster December 18, 2013

The Flap

The disease-like addiction to the new smart phone app "Flappy Bird."

Girl 1: "So I was hanging out with David the other day... and I think he gave me the flap"
Girl 2: "That sounds terrible, is there any way to get rid of it?"
Girl 1: "I don't think so..."
Girl 2: "Well what is it?"
Girl 1: "Here give me your phone."
*Two hours later*
Girl 2: "....... oh shit"

by @42mccollum10 February 5, 2014

flaps

affectionate name given to a close friend, particularly used for storing said friend in your mobile phone book.

derived from the fact your heart flaps or flutters when you see you have a message from them.
may be preceded or followed by an X showing extra love or sexual desire

louisa: "whats your new number anny?"
anny: "306771"
louisa: "thanks poppet, ill save it as xxAnnyFlapsxx"
anny: "sweet"

by aflapsX August 17, 2011

flap

Either or complete set of well-used pussy lips

Dude, your sister is dancing at the local strip bar - we can go see her flap for a buck!

by BahamaBoy June 21, 2005

Flap

A gay man penis

Last night I went to a Techno club and it smelled like sweaty flaps.

by MrCool Turnage January 10, 2012

flapping

hovering around, not really doing much

yo, stop flapping about

by nark November 5, 2006

Flapping

When a naked man swings his hips from side to side - causing his penis to alternately hit each of his thighs, going from side to side.

He was standing there in the shower, singing and flapping!

by Lotta fra Bråkmakergata August 16, 2007