A US slang expression describing something so revolting it would cause even a maggot — an organism that thrives on rot and decay — to retch. Used hyperbolically to emphasise extreme disgust or revulsion. The phrase functions as an adjective or predicate adjective in informal speech.
The smell coming from that refrigerator was enough to gag a maggot.
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(US, slang) To cause great disgust or nausea.
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Regional slang from around the English-speaking world — British, Australian, Irish, Caribbean, Nigerian, Filipino, AAVE, and the hyphenated-English dialects that make the internet sound local.
See all Regional & Other slang on Slangora.