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A hybrid of hilarious and hysterical. Used to express something so funny that typical use of hilarious or hysterical, just wont do. Pronounced hill-stair-eeych-cul.
Guy 1: Bro did you see that guy get powned?!
Guy 2: Hells yes! It was hilsterical!
by Grc3 April 12, 2006
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Cleveland Steamer Plush

The vengeful act of crapping on a lover's chest while they sleep.

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