Top definition
When you feel the need to poop, but it won't come out, no matter how long you sit on the bowl. Sometimes occurs in public toilets. Also occurs when you feel under pressure to move bowels, like when someone is waiting for you.
I thought I had to take a crap, but nothing came out.

Dude, you had a shy poopie!
by Cheela June 19, 2006
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