: A sound of acknowledgement, used when nothing else could be said.
: A sound used when one has something to say, but would rather not for the sake of another.
: A sound used when one has something to say, but would rather not for the sake of another.
Person A: I really hate Person C, they get on my nerves so often!
Person B: mm
Person A: I mean like honestly man! What a guy!
Person B: mm
Person A: I mean like honestly man! What a guy!
by mmMaster December 29, 2021

Mm is an abbreviation of Messmess (qv) An SMS making no sense due to word prediction, incorrect input, bad eyesight etc. Not to be confused with a Randmessmess (Rmm) q. v.
by Pablo58 November 23, 2019

Saying someone not measured by cm, just mm. (could mean any measurements: height, dick length, etc.)
by fattylizzo February 29, 2024

-Hey Justin, MM?
-Yeah sure Conrad.
Person 1: MM?
Person 2: Ofcourse bruv
Father: What's MM son
Person 1 & 2: don't worry about it
-Yeah sure Conrad.
Person 1: MM?
Person 2: Ofcourse bruv
Father: What's MM son
Person 1 & 2: don't worry about it
by Just your typical white guy November 30, 2019

by lukemedcalf19 March 23, 2017
