A short hand for Mutual Masturbation. Mainly referred to pair of bros giving a helping hand to each other.
A: How far have you two gone? You’ve been dating for 3 weeks now.
B: Just some Mu Ma here and there. He’s a virgin so...
B: Just some Mu Ma here and there. He’s a virgin so...
by kenny69 May 29, 2021
Get the mu ma mug.