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1. Describes almost accuratly the sound that wanking off makes.
2. the motion your arm makes when wanking off.
Mike: *FWAPFWAPFWAPFWAPFWAPFWAPFWAPFWAP*
by B to the R July 04, 2003
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2
Fwap is a slang term for male masturbation. The origin of the word is believed to be onomatopoeic, though may be an acronym (or equally likely, a backronym) for Furiously Wanking At Porn. It is in common usage amongst the b3ta web community.
A; Where's person c
B; Oh he went to his room
A; Oh fwaping again no doubt
by arseaboutface December 03, 2006
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3
The act of slapping woman/man with a slightly erect cock.
"Hey Sue, you're not done with my BJ. I still need to fwap you across the cheek."
by joelnjessica October 29, 2013
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4
The act of hitting someone in the face with your penis. Derived from the sound it makes.
Woman: I won't be able to make it to your party tonight.
Man: *FWAP*
Woman:I do belive you hit me with your penis.
Man: Yes, I do belive I did.
by Ninja Fight September 26, 2006
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5
to smack incessantly with a fish; the highest form of physical insultation
Mrs. Creasy and Mrs. Pruden are two individuals who most certainly should be fwapped.
by JessIsTheBest December 14, 2004
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6
To hit someone upside the head with your hand unless otherwise specified.

Netspeak

see thwap
Jeez, that guy was such a moron. *fwaps him*

Erg! She makes me so mad!! *fwaps her w/ a brick*
by Nonya Beezwax June 28, 2004
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7
The sound of your balls and taint slapping your inner thigh as you masterbate
The neigbors heard little Timmy fwapping through the thin walls of the brothel.
by McGreg August 12, 2007
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