by Way-Way February 2, 2023

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 13, 2007

by Emma, Queen of Hearts September 24, 2005

In Europe; this terminology is used in reference to the female genitalia when wanting to have sexual relations. Was also referenced in the show An Evening with Kevin Smith: London.
by toolnofx7 March 9, 2009

by ahmed27 November 5, 2020

Trench fanny is when you have a splash in the sea fully clothed and proceed to walk around all day with sopping knickers and a good ol’ chafe.
“Oh crikey, I love swimming in the sea, but now I’ve got trench fanny!”
“Susan, I can smell your trench fanny!”
“Damn, I forgot a spare change of clothes... I’ll probably get trench fanny again.”
“Susan, I can smell your trench fanny!”
“Damn, I forgot a spare change of clothes... I’ll probably get trench fanny again.”
by FlappyFanny July 23, 2018

by £&@ July 9, 2020
