SM

stands for SELF MUTILATION and is also known as self-injury. (cutting or burning yourself. doesn't mean you're suicidal)

She does SM.

by Anonymous October 24, 2003

sms

1.Shit myself.

2.Text messaging used on mobile phones.

by Flamin Homer April 1, 2003

SMS

Sent Message while Shitting - A way of letting people know you're droppin' a deuce while texting them.

315: "pure liquid SMS"
434: "dude thats sick dont text me from the shitter"

by acid66 April 20, 2010

SM

Sexual Manipulation

by Anonymous October 7, 2003

SMS

shaking milz syndrome(SMS) shaking some one ever so violently

Omg u just gave me SMS

by Milzstastic June 8, 2010

[SM]

The Steamboat Mafia. A gang that is usually associated with contract killings.

Dude! he got SM stomped
Shit its the SM!

by David L.[SM] July 5, 2006

SM

Sergeant Major.

"That SM is a big cunt."

by Diego July 29, 2003