Not a chocolate candy, it’s a cute ship between Mark and Mikayla. It’s called m&m because both their names start with the letter M. m&m would like to keep this a secret and to not let anyone know other than their close friends.
by ¿ ? January 1, 2019

Masturbating on the motorway.
Charlie ''Eww Dad, a bird poo'd on my window!!''
Daddy Dave, ''No son, that was just a man M&M'ing. Now shut the fuck up and give Daddy a big a kiss.''
Daddy Dave, ''No son, that was just a man M&M'ing. Now shut the fuck up and give Daddy a big a kiss.''
by hjvfjf uy gil ohil hilo/h February 13, 2014

M=M means Meth And Math Are Equal. It's when you're teacher says "We're Doing Math" but you're actually doing meth. It's not your fault that your teacher smokes. M=M is like saying that you're teacher is saying the truth but their not. DON'T TRUST TEACHERS!
by Whiteamuiian September 19, 2016

the hottest, most fuckable, fattest pussy lip owning candy out there. she has huge dominatrix vibes and won’t hesitate to pull the strap out to spice things up. the green m&m, the hottest m&m, has been our sexual awakening and we don’t even know it.
by Sexymarx April 7, 2020
