1 definition by MusicalTheatreGirl

cmu

Cmu on social media such as instagram can mean either 'Chat me up' or 'Cracks me up' or something like that for example 'Cracking myself up'

Person 1: OMG you guys, a spider just bit me!
Person 2: Bite it back.
Person 3: CMU

by MusicalTheatreGirl May 28, 2017