Vagina Muffler 

Its where you stick a vagina on a tail pipe start the engine, and hear the biggest queef you have ever heard and then drive.

"Holy shit i gave Sarah the biggest Vagina Muffler last night! You could have heard it all through the town!"
"I heard it"

Vagina Muffler by The Vag wrecker September 14, 2009

tuffy muffler 

means to shove your penis in an asshole and they fart on it.

1. shut the fuck up or ill give you a tuffy muffler.
2. i would totally tuffy muffler

tuffy muffler by longboards September 19, 2009

guff muffler 

A device worn beneath outer garmets to arrest the foul stench coming from ones butt when farting and to reduce the sound from reverberating round

Farts smell and sound much worse when in the shower than sat in the car with a guff muffler (clothes) on

guff muffler by The Guffers August 14, 2011

Monroe Muffler 

In order to give someone a Monroe Muffler, one must have a sufficiently large potato and one or more willing or unwilling anuses in which to insert aforementioned potato into.

Dayuuuummm! I was just up at R.I.T. partying and this one bitch was just begging for me to give her a Monroe Muffler!

Monroe Muffler by Explorer1958 June 17, 2013

Queef Muffler 

see "porn stash" for similar meaning.

Nice mustache , oh you mean my queef muffler?

Queef Muffler by Dick davis March 7, 2014

stinky muffler 

When you have anal sex and the women farts during. When the guy pulls out a little poop comes with it and it's very stinky.

"Man Karissa did a number on me last night, she did that stinky muffler and I can still smell it."

stinky muffler by Stinky Muffler October 9, 2016

Cunt Muffler 

A douche Knuckle

Matt: Danny, you're a cunt muffler

Cunt Muffler by Davidisabab May 4, 2017