a female actually slapping someone on the face with their fanny. Usually the victim has to be laid down unless the female is particularly versatile.
James: Damn! last night i thought i was gonna get some

Kelvin: oh yeah? what happened?

James: She threw me on the bed but then just gave me a massive fanny slap!
by James and Kelvin February 12, 2007
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When you physically slap someones fanny, as a punishment for a bad blow-job.
girl, that blowjob was sooooo shit your gonna get a right fanny slapping!
by cardiffsmiler August 11, 2006
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The act of drying out an aroused female lover by repeatedly slapping her wet vagina and generating nothing but a dry and annoyed result.
"Everything was going fine until he started fanny slapping me!"
by Fannyslapper April 20, 2010
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A fanny slap is a slap that sounds like when you slap a fanny, it usually associates with a ruler and slapping it on the table anything that makes that tingling sound is known as a fanny slap. Could even be a spatular.
Person 1 & 2 are in the maths room

*Person 1 slaps his ruler across the table*

Person 2: Did you hear that?

Person 1: Yer it sounded like a fanny slap!
by LouiiHoare July 4, 2011
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