Human deodorant
When someone usually a jock/bully or anyone that can overpower someone makes someone else lick thier armpits in place of deodorant.
At school I begged the bully not to give me a swirly. He said why and I said that I have an armpit fetish. He said that he would make me his human deodorant and tell the football team. Now I lick the sweat from their armpits forever.