Muffle-Fuck 

The act of having sexual relations with your car or car parts such as a muffler

Dude: Have you seen bob latly?
Dude2: No but he told me he was goin' to muffle-fuck his girlfriends car.

Muffle-Fuck by Mr.Trips ( jacob barile) December 28, 2007

Muffle-fuck 

(Verb)
The act of stifling your sex noises so your children in the adjoining room can't hear how mommy likes to be spanked and called a whore

The kids have been home all thanksgiving break. I'm tired of having to muffle-fuck every night so they don't hear us.

Muffle-fuck by Kbee405 November 25, 2017

Muffler fuck

Verb; The act of ramming your vehicle into the rear end of another vehicle at a considerable speed.

-"Damn, that guy was going pretty fast when he hit you"

-"Yeah, he muffler fucked me pretty bad"

Muffler fuck by Whiskie December 1, 2009

Muffler Fuck

A fag who fucks mufflers, usually named jimmy

look at jimmy...that muffler fuck!

Muffler Fuck by Titts December 31, 2007

muffler fucker 

Someone who drives too close to the car in front of him/her--a tailgater.

"(aloud in car when looking in rearview mirror) Hey, get off my ass, muffler fucker!"

muffler fucker by AJinPhilly August 25, 2005

muffler fucker 

noun: one who is too attached to cars, makes sweet love to cars commonly through the muffler

"Reece is a muffler fucker"

muffler fucker by Anonymous August 25, 2003

Mufflefuck

1. Two sheets fucking.

2. Something two friends make up in the early hours of the morning.

Mello: Are you denying me mufflefuck?

Near: Yes, I am denying you mufflefuck.

Mufflefuck by Raccoon Runt January 22, 2009