Top definition
When you take a shit and it's so enormous that it sticks out of the water in the toilet bowl, like the dorsal fin of a shark. Commonly found in low-capacity flush toilets.
It's always a shock to look down in the toilet and see a dookie shark staring up at you.
by Mister Tibbs January 27, 2013
Get the mug
Get a dookie shark mug for your mom Julia.