Top Definition
A female kissing another female who has an abundance of facial hair, especially above their upper lip.
I was mug runching with this chick at the bar.
by Moofie August 14, 2004
When one girl licks another girls bald vagina
I watched two girls mugrunch at a buzz nite last nite!
by Mainran November 14, 2010
When you put the tip of your nose in a girl's ass and lick her vagina.
Man, I mugrunched the shit out of that girl last night.
by Swarlificus April 28, 2009
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