MM 

Morning masturbation...the process of waking up and shooting of a knuckle baby

Ted: hey jim wake up, we gotta meet the guys for breakfast
Jim: go ahead with out me, im gonna get some MM in before i leave.
Ted: this time dont get it on the wall

MM by DR. McBridealshower April 8, 2010

mm 

Romanian abbreviation for word "mortii matii" which is an insult.

-Muie
-Pleaca in mm

mm by trc February 29, 2008

MM 

short version of My Majesty, the oppinion we all have on ourselves ;}

MM is not in the mood for your bullshit, so stop spamming me.

MM by Niolvia March 19, 2007

(mm) 

A Skype emoticon signalling something is nice.

-I had some nice ice cream today!

-(mm)

(mm) by Bob Millerer February 18, 2011

'mm' 

Little devil,
short for Mefisto Monster, rarely used in online forums and chats.

"Ooh, you mean little 'mm'!"

'mm' by Mefisto Monster March 31, 2005

mm 

Medicinal Marijuana.

It's the good stuff.

mm by Matt September 1, 2004

mm 

When two people sit next to each other and simultaneously give each other hand jobs.

Hey mate did you finger Tayla?
Yeah and she gave me an hand job!
So you guys mm'd!

mm by wozza June 4, 2015