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1 definition by scroty G

 
1.
A substitution of the first two letters of "irritable bowel" as the initials of someone who always has to take a shit at the worst time
I.B. Clarkson (Irritable Bowel Clarkson) could not hold it until the next exit, so he had to take a shit in the woods.
by scroty G October 06, 2009
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