2 definitions by International Lesbian Actor, George Clinton

A international group of high school moochers who control all the moneyflow of high schools around the world. Often times considered a very dangerous and serious group of people, who get what they want.....no matter what. Also, they are the inventors of the curb stomp.
Billiam: Hey man, it's the D - bag mafia!

Usef: Hide the cattle!
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Okay, everybody else's definition of MOS is wrong. They are all stupid. Here is the real explanation: When a man loves a woman very very very much, they engage in an act called M. O. S. MOS stands for Mutual Oral Sex and is extremely pleasurable. Also see 69, Something that is awesome, the shit, the awesome, the best thing ever, etc.
Jennifer: Hey Austin, wanna MOS?

Austin: I like men.

Jennifer: Oh.

Jennifer: You don't know what MOS is, do you?

Austin: No. *Looks sad*
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