Normally said just before an explosion or can also be said to cause an explosion that kills everything in a 5 mile radius.
by digbicknibba September 26, 2020

by im u fucking sadist17 April 4, 2021

MMM, Standing for Major Mischief May, is a month where every day, Whoever decides to participate, commits a mischievous act until May ends.
by TeaPotOfQueer April 24, 2021

Mmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm
by Omahgoigosh he. THICC March 27, 2020

One(M): Yo bros, y'all down to MMM?
Two(M): Only if Three is down for it.
Three(M): I'm in!
*then came the gay threesome
Two(M): Only if Three is down for it.
Three(M): I'm in!
*then came the gay threesome
by Gimmily January 17, 2023

When the commonly used 3 letters to describe enjoying a food, taste, smell, pleasure etc. gets replaced as the top result on Urban Dictionary by a definition saying "mmm" has something to do with not having anything to add to your friends text conversation
Mmm that food was delicious?
Friend: You dont have anything to add to our conversation
You: No, I simply said mmm
Friend: You dont have anything to add to our conversation
You: No, I simply said mmm
by UrbanClicktionary July 13, 2019

by Local Pillow July 13, 2021
