Top Definition
Usually an air biscut that has occurred without warning.
They're said to be quite foul, and almost edible if released in close proximity to anothers face like a fartpie.
"Bro, I think you have a "Gastral anomaly" seeping from your anus." "I'd go check my shorts if I were you."
by NickName4U May 20, 2006
11 Words related to Gastral anomaly

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