The definition of someone very cute who deserves the world at most.
Did you see that person over there? Yeah, that is most definitely Mo.
they are a mo. stupid. dumb. idiot. smells. ugly. buzz cut
“He’s such a mo”
“Mo brain”
“The mo cat bit me”
a girl that is neither extraordinarily hot nor completely unfortunate...if you're bored one night, she'll do.
"DAMN you finally got some! was she hot?"
"She was mo..."