An expression used when one is surprised or taken aback. This may be used in a moment of delight, angst, anger, pleasure and many other feelings and emotions.

Also can be used to gloat with.
Oh! Shnap son! There won't be any mushrooms on the burgers?!?

Shnap son! I just beat you three times in a row!
by Tedro November 22, 2005
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