-someone who is fun to be around
-someone who knows the best places to hang
-someone who can always have fun no matter where and when
- a nickname for someone who's first and last name begin with 'M'
guy 1: hey man, i hung out with Jake last night.
guy 2: ah, really? i hear hes a real MoMo.
guy1: true dat.
girl 1: hey there's a new girl in school, her name's Mary Melton.
girl 2: really? that's a stupid name.
girl 1: no kidding. she goes by MoMo.
girl2: i would too.