When someone goes to pound their fist against yours, you move to the side and make a peace sign, and if you look at both hands together, you've made a SCHNAIL! You must yell "SCHNAIL!" when this occurs.
Yours is the head of the snail and the other person is the shell. Therefore: snail + shell = SCHNAIL!
He went to give some love, but instead he got schnailed. SCHNAIL!
The act of intercourse wherein a male-to-female transgendered "woman" anally or vaginally penetrates "her" partner.
Friend 1: "Hey, so that hooker you hired for my birthday yesterday wasn't really a woman...."
Friend 2: "What? You serious? That chick was smokin' hot!"
Friend 1: "Ya, that's why I let her stay and I fucked her. Who knew tranny was that good?"
Friend 2: "Wow, you must have been drunk."
Friend 1: "Very, that why she shenailed me."
Friend 2: "I bet that hurt...."