scroty G's definitions
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 6, 2009
Get the I.B.mug.