Top Definition
Acronym for Slap Me And Call Me Susan. Can be used instead of the old-fashioned term "I'll be." Susan is a general term used for a plain person and can be used as a substitute for any person. Kind of like Jane or John Doe. A Susan, a stooge.
Well Slap Me And Call Me Susan, McDonald's now serves "gourmet" coffee.

Or in a text message/IM: Well SMACMS, McDonald's now serves "gourmet" coffee.
by SMACMS October 27, 2009
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