Axillism 

The use of the armpit for sex.

See paraphilia

Axillism is a bizarre sexual practice.

Axillism by Mistercity August 6, 2006

Axillism 

Having sexual Intercourse with an Armpit

her pussy is so hairy i can't tell if a am doing axillism or the real thing!

Axillism by Don Gulliver May 8, 2003

axilism 

A weird sex position. In which you masturbate via your partners armpit

You wana get axilismed?
depends, what is it?
Spread your left arm out

axilism by james March 10, 2003