1 definition by James and Kelvin
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!
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