Top Definition
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.
by Mr.Trips ( jacob barile) November 28, 2007
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.
by Raccoon Runt October 11, 2008
Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from We'll never spam you.