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Acronym for "Said in a light and joking manner" used to covey a general sense of aloofness in an IM or text chat with out having to type lol at the beginning of every sentence like a psycho or idiot.
Cindy: "why did you have sex with my mother!"

Jeff: *SIALAJM* "why not?"
by Petezard July 26, 2010
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