Modus operandi (often used in the abbreviated forms M.O. or simply Method) is a Latin phrase, approximately translated as "method of operating" The term is used in English to describe someone's habits or manner of working, the method of operating or functioning. It is often used in a criminal sense, to profile the methods employed by individuals during the execution of a crime, and may also be used in offender profiling,2 where it can also be used to find clues to the perpetrator's psychology.3 It largely consists of the methods used to execute the crime, prevent detection, and facilitate escape.
What is the Perp's "M-O"???
What is your "M-O"???
by HRVAT1975 July 13, 2009
Not an urban term at all, but a legal one. Short for Modus Operandi (method of operation). One's either habitual or premeditated way of doing things.
His m-o was always smash-and-grab
by Entymol August 14, 2006
M O is an abbreviation for Modus Operandi. which is Latin for Method of Operation or Mode of Operation

In criminal investigations, it refers to the criminal's methods whether murder or burglary or whatever as similar methods used in separate offences which could indicate the same person was responsible.

It doesn't have to pertain to crime. It can also be used to describe a person's 'trade mark' habits.
My girlfriend always fingers my a-spot when she gives me head. That's her M O.
by RoosterCranium September 22, 2009
M. O. A. TXT's (Tommorow by together label mates with BTS ) fandom. We stan Soobin, Taehyun, Huening kai, Yeonjun and Beomgyu.
That girl over there she's an M. O. A.
Really? She stans TXT?
by Love.Kawaii February 21, 2020
" Omg, last night me and bill were m/o until my parents came was so fun"
by madelyn alexis September 7, 2005
Multiple Orgasms

Used like one would use xoxo (hugs and kisses) at the close of message..

Promising to give pleasure
Miss you babe...
m's & o's ;)
M' & O's
by Tattooed13 December 29, 2016
A rocker, happily yelling at his favorite concert!!!!!


1: YEAH!!!!!!!!!!!!!!!!!!!!!!

1 and 2: \m/ (^o^) \m/
by Gwaube November 30, 2010