Exclamation that describes displeasure on the part of the speaker due to something being distasteful or otherwise sickening or displeasurable. From valspeak, so somewhat archaic. Usage these days is considered silly.
Oh, gag me with a spoon! Look at the zits all over that nerd's face!

by Dennis October 10, 2003
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An expression you say when you're in disbelief
Person 1: Did you know that dogs can't look up?
Person 2: Well gag me with a spoon and call me Criss Angel! I didn't know that!
by Vftw October 19, 2007
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