Top definition
Severe case of diarrhoea that comes on suddenly, particularly after eating junk food or a heavy drinking session.
Beset by another attack of gutrush, Gladstone had to run for the toilet.
by Vinnie Ton April 03, 2007
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The way you feel when u've done to many magical mushrooms and have stomach cramps.
Man those mushrooms gave me some mad gut rush.

AHH. This gut rush is killing me.

Man i got some crazy gut rush right now.

I just want this damn gut rush to end, it's killing my stomach.

I hate it when i get gut rush on mush!
by Schurhoff February 13, 2006
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