An exclamation to express you amazement at something that is good.
Ice cream is ready.
Response: mo!

You just won a million dollars.
Response: mo!
by gerrypez July 14, 2009
1. short for mom, specifically used to talk trash about someones mom when you're so fucked up your words are slurred so you just take the lazy way out.

2. short for more in the same instance, usually referring to more of whatever substance has gotten you so fucked up
1. "Yo i just banged your mo last week."

2. "Give me some mo"
by Yigstein's Money February 17, 2011
verb, "to do a mo", to fail at ones objectives - referencing Mo the bartender in popular cartoon sitcom "The Simpsons"
guy 1: hows your coursework going dude?

guy 2: I quit university...

guy 1: What with only 6 months left to go??? You doing a mo man
by warblings December 05, 2010
a person who has no personality, or the act of havingno intelligence what so ever
a joke that everyone clearly understands, a Mo would say something like OMG get it... wicked delayed
by cjh26 August 19, 2010
To get really bad head, specifically including a lot of teeth.
Man, I got moed last nighi, I think there may be scars.

Dude, don't go with her. she'll mo you.

It was her first time giving me a blow job, so I didn't have the balls to tell her she moed me.
by Ta Mir May 02, 2010
Derived from the term "Homo" or "Homosexual" whereas the "Ho" beginning is used to describe the woman in a relationship with the gay man, subsequently named the "Mo"
Angela is the ho, and Sean is the mo.
by eugaet January 25, 2010
Short for mustache. The term "mo" has gained notoriety and been propelled to international fame by the Movember movement.

Originated in Australia, Movember is an annual campaign to raise money for mens' health issues; notably prostate cancer and testicular cancer. Every year men across the globe begin November 1 with a clean shaven face and spend the month growing and grooming a mustache in an effort to raise awareness, and money.
Dude, check out that hideous Mo on school janitor.

Today when I took my Mo to the gas station a little girl screamed at the sight of us and hid behind her mother.
by Yosemite.Sam October 19, 2009

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