1 definition by !jkmc?

Top Definition
Laughing-Silently-To-Myself. The REAL alternitive to LOL, because really how often are you laughing out loud when you type LOL. Exactly. Not too often. And when you are laughing out loud, use LOL, otherwise: LSTM.
Sue: hey brad, guess what?
Brad: what?
Sue: I have Herpes :(
Brad: LSTM
Sue: That wasn't a joke!!
Brad: oh . . . sorry . . LOL!
by !jkmc? July 02, 2009

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