by D-Ho April 17, 2006

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

Sent Message while Shitting - A way of letting people know you're droppin' a deuce while texting them.
by acid66 April 20, 2010

by Milzstastic June 8, 2010

by David L.[SM] July 5, 2006
