the turning down of the corners of the lips to signify disdain, chagrin, or pensiveness; based loosely off the face of a sturgeon (a type of fish)

a typical response to disgusting or unfortunate news
Math Teacher: Jimmy, the front office wants to see you. Apparently your grandmother just died. Also, you got an F on your Calculus final.

Jimmy: *sturgeon face*
by fishyrace April 29, 2009
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