being in a situation when you have diarrhea.
do you want to come down the pub or are you still being bum sick?
by P1eter June 21, 2007
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to shit and vomit at the same time
i drank 50 pints the other night, went to the gents and was bum sick
by becomeaproduct December 7, 2007
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To spray the entire inside circumference of a toilet cubical with explosive diarrhea
"What the fuck its only 10:20, have you seen the "bum sick 360" in the shit house"
by Ace Elgor Nurlins October 31, 2011
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