Kids with giant ass backpacks that usually go out 3 times their body's width.Usually resulting in back problems in the future.
by Gojitte March 22, 2007
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
by j*rocktrixxxkilla May 21, 2008
Abbreviation for in bed. Usually safe to use when within earshot of parents, teachers, or anyone else who may disapprove if they heard the actual joke.
by whohastoknow January 24, 2011
Dr. I.B. Shitting was the first to move diarrhea from the bowels of the bathroom to acceptable dinner table chat with one simple acronym.
by tirtle February 09, 2019