BMM

Big Mouth Make-out.

You're at the bar late, you've been talking to a boy/girl for a while, you both know what's going to happen, but you're a little tipsy so you're not sure the mouths are going to match up, so you just plunge into the BMM without a care for who sees it.

Johnny didn't care who saw it; he and that girl were just BMMing last night.

by concernedhoya January 8, 2010

BMM

Break My Mirror

Wow shes so ugly she BMM

by Its.a.taco.bel02 August 1, 2016

BMM

Acronym for big mommy milkers
Lots of people use it in reference to some big ole titties

“I like bmm but small tits are cool too”
“Yeah Nicki Minaj has some bmm”

by Super swaggy ;) May 26, 2021

BMM

A synonym for weirdo, freak, eccentric being, odd-ball, creeper.

That girl is such a BMM

by THISASIANGUY October 27, 2009

bmm

beating my meat or beat my meat

i gotta go bmm

by rasles June 23, 2018

bmm

(noun) Baby Making Music

Having planned hours in advance for his night with Jessica, John had conveniently grabbed his BMM and stuck it in the car stereo.

by meghanwrotethis December 1, 2007

bmm

Blows My Mind
Used in IM conversations, forum postings, fbook, texting, etc.
Not for use in daily speech.

The new Tokio Hotel album completely bmm.
The fact she would do such a thing bmm.
That eye rape completely bmm.

by OnceUponAKaulitz January 9, 2010