When one has a wet fart while receiving a rim job.
We were having a good time until she Pittsburgh mufflered me in the mouth
A failure of a beard....kinda looks like a scarf on the guys neck...very very unattractive
"ew look at him with his muffler beard"
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
the residual shit stains in your underwear at the end of the day. Just like skid marks, but more apt to be from a possible shart.
Randy was prone to excessive muffler marks so he switched from tighty whities to dark boxers.
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."