MO 

MO - Multiple Orgasm.

To have many orgasms, one after the other in short succession.

I MO'd so hard that I soaked the sheets last night.

MO by Fairchildjune September 5, 2013

mo 

Short for motherfucker; one who fucks someone's mother; scumbag.

"That mo' is a fucking scumbag."

mo by SPee[d] August 12, 2006

Mo 

Mo is a nickname for Ramona, a girl who makes me smile, laugh, and makes me happy every moment I spend with her. She is funny, smart, kind, very artistic, creative, and cute. She makes my heart melt. Her personality is amazing, and I love her for it.

I love you Mo!

Mo by Ikuyo! July 29, 2018

MO 

Magneto-optical (disk or drive).

A removable magneto-optical disk.

Archive it on an MO, it's more stable than a syquest or zip.

MO by vanilla g-lotto December 29, 2004

mo 

Moet champagne. Definitely not Captan Morgan; it's simply not classy enough.

"Even if you gots to get jet-black, head to toe To get the dough, battle for bottles of Mo' or 'dro" -- MF DOOM

mo by Fourth Doctor May 15, 2005

mo 

A term of affection used between close friends, similar to "bro." Can also be used as a light-hearted put down, inferring someone's lack of fortitude.

"Wadup mo."
"Whatchu mo's up to."
"Chug that fuckin beer, don't be a mo!"

mo by Moose121 April 20, 2007

Mo 

When used in north eastern New Jersey/New York "Mo" generally stands for "Moron".

"My dad is such a mo. He got arrested for assaulting an officer again."

Mo by LK865 November 19, 2011