Foot Bang 

Fornication using the foot as a substitution for the male reproductive organ.

I want to foot bang that girl!

Foot Bang by 1159 May 13, 2005

canadian foot bang 

When a man pisses on their partner's foot, then proceeds to slam his testes up and down, creating large bang noises.

example:

- hey, whats that noise coming from their room?
- i heard they're trying out a Canadian Foot Bang

canadian foot bang by Charles Eugene Moist-y-Doo August 2, 2015

Footbanging 

Similar to headbanging, footbanging is when you shake your foot in a repeating motion in sync with music or just out of boredom. It can be a subconscious or conscious movement.

one warning: footbanging can also be misheard as masturbating.

Footbanging by DragonHeart247 October 14, 2011