Top Definition
A deviant sexual practice.
You start off by fucking a girl doggy style in the pussy, and then you switch hole. She will turn around and say wtf? and that's when you punch her in the face.

The word is a contraction of switch and punch. Swunch.
"I swunched that girl last night, it was awesome!"

"This chick is so swunchabe!"

"I just want to swunch her!"
by Tiji February 20, 2008

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