Top Definition
1. When a woman empties her bowels, whilst recieving cunnalingus.
2. A chick getting the box licked off her while pushing out some butt butter.
Jhonny: "Billy said she just about beat him within an inch of his life, until he agreed to give Brenda a Rug Mumkin."
Ted: "I'd commit suicide if I was that toilet!"

"That chick was so hot, I would have given her a Rug Mumkin while 69'ing, AND have her on top!"
by TheBigP September 24, 2012

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