Mo

The act of Making Out with someone. There are many different variations of Mo-ing (i.e. the Slow-Mo, easy-Mo, whoa-Mo).

Did you Mo last night?

Yeah, Felix and I Mo-ed on the dancefloor. Definitely a slow-Mo.

Mo

adj.
-Meaning very, largly,or alot.

"Dude that was Mo cool"

Mo

A boy that you care about.

that boy is such a Mo

Mo

Commonly used in Western States, especially Idaho and Montana, to refer to a Mormon, or member of the Church of Jesus Christ of Latter Day Saints (LDS)

He's a Mo -- he never drinks coffee.

Mo Mo

A blunt. Wrapped in the cigas "Optimo"

yo lets hit that mo mo.

yo lets smoke up that mo mo.

mo

Can be used to replace the words 'very' or 'mad'.

That's MO ghetto, yo!!

mos

a bastardization of mos def meaning "I concur" or "Affirmative"

"man, this food they're serving blows"
"mos."

-or-
"are you going to join the riots tonight?"
"mos."