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1.
Chuming occurs when you get drunk off of Bloody Mary's and vomit it up. The vomit looks very similar chum or ground up fish used in baiting sharks.
After my 8th Bloody Mary I did some chuming all over the back seat of my car.

Beer bonging that six pack of Bud Light/ Clamato resulted in me chuming all over the bathroom.
by biggarton October 30, 2009
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