Fanny whacker 

A person that is so mad they would drop kick another person in the fanny

You really messed her up you Fanny whacker

Fanny whacker by Mentalioso August 30, 2018

Fanny-Whacker

Fanny Whacker refers to one's parents. If you grew up before spanking your children was band. Your parents were called fanny whackers

Hey Mark quit doing that, here comes the fanny-whackers!

Fanny-Whacker by fanny whacked February 3, 2010

fanny wacker 

A term ones younger brother may use to describe you if you are a lesbian.

My sister Holly is such a fanny wacker.

fanny wacker by Superdannnn August 22, 2014

fananywhacker 

to cheat in the game of marbles

the person who flings his marble with his whole wrist to knock the opponents marble (which would result in a win of that marble) - rather than flicking the marble with thumb and forefinger, as is supposed to happen

fananywhacker by Penelope February 24, 2004