It is a sexual act involving at least three people, two which are male.
Girl, last night Terrance and Jamal gave me the double muffler hard!
When you run your car to warm the tailpipe and then fuck it
Wife didnt put out so i had a dirty muffler
An overly loud vehicle that is purposely so. To make up for the drivers micropenis. The louder the vertical the smaller the penis.
Damn, that micropenis muffler is so loud, dude must be hung like a bee!
noun: one who is too attached to cars, makes sweet love to cars commonly through the muffler
"Reece is a muffler fucker"
Underwear, undergarments.
Do you smell that? I betcha his fart muffler is stained.
1. Adj. Butt Muffler- Usually used in terms of insult or just to say something. When used as a direct adjective, mainly an insult, it utterly confuses the target, giving you time for your next comeback.
2. Noun Butt Muffler- When used as a noun, it is usually referred to something that is shove up or into the rectum to "muff" the noise of a fart or black any and all outgoing "materials".
1. You god damn Butt Muffler, go fuck yourself!
2. Dude, your ass is leaking! I'll go get you a Butt Muffler.
A fag who fucks mufflers, usually named jimmy
look at jimmy...that muffler fuck!