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A awful stomach flu that sees you chucking your guts up and shitting in the toilet, sometimes both at the same time.

Lasts around 3 - 5 days.

Caught by not washing your hands
Tom: Man it stinks in the bathroom!
Mark: Yeah, Christina has the Norovirus. She has been shitting all day.
Tom: Sucks. Do you have Toilet Duck?
by eskills December 13, 2012