The sound one makes when masturbateing to porn on a laptop computer. Also can be the sound mad when your pounding a honey hole and your ballsack and ramrod slam against those meaty lips.
We got home early only to walk in our apartment and hear the sound flap flap flap flap flap flaaaaaaap flap of Tim our virgin roomate wackin off to porn on his laptop.
by FLAPFLAPfromNC December 27, 2011
Get the Flapmug. "Can you do me a flap for $40?"
by RealFamous August 28, 2016
Get the Flapmug. Noun: a movement of a ballsack from side to side or up and down.
Verb: the act of using your ballsack to hit something
Verb: the act of using your ballsack to hit something
by Electrified22 October 15, 2018
Get the Flapmug. Noun: Idle, but animated chat--could be directed to one who is not interested or could be catching up between acquaintances, akin to shooting the s--t, but of shorter duration.
Verb: To engage in such chat (like birds flap their wings and vocalize when getting together)
Verb: To engage in such chat (like birds flap their wings and vocalize when getting together)
She came at me with some inane flap, and it was all I could do to act polite.
I'll be watching the game while you girls flap.
I'll be watching the game while you girls flap.
by John Niederbuhl April 12, 2008
Get the Flapmug. by xx Ice Bitch xx June 2, 2010
Get the Flapmug. 
