by KearnyMesaBowl June 26, 2017

The. Muffler is the act of stuffing a girls panties into her anus, while she is asleep, leaving any air that escapes her anus, muffled.
" That drunk slut passed out after a hard ass pounding, so I couldn't resist giving her a nice muffler, her tiny little g-string fit right in her gaping hole"
by BBawesome August 23, 2011

by skidmarx88 May 04, 2011

Ricer: Oh yeah I just got a loud muffler for my car so people will think my car is cool because it has a loud exhaust but I'm too poor to afford a real powerful car!
Me: ......You're an idiot.
Me: ......You're an idiot.
by Kevin Esser February 25, 2008

The process of preventing your female partners orgasmic groans from becoming too loud by applying another females genitalia to her mouth, hence muffling the moans.
- "Darling we've had noise complaints from the neighbours about your orgasmic moanings, how about we ask your twin sister if she'd like to do a spot of muffling?"
- "Dude, my missus is so loud when we get it on that I have to apply a muffler, which is pretty much a win win for me!!"
- "Dude, my missus is so loud when we get it on that I have to apply a muffler, which is pretty much a win win for me!!"
by Stu-muffler November 12, 2009

To celebrate their anniversary Carl & Janie ate at their favorite Mexican restaurant, which came back to haunt Carl when she accidentally gave him The Muffler.
by Dan Cortez March 26, 2017

by dspinner January 24, 2005
