When you have the urgency to go number 2 and it feels like a monster is about to unleash out of your butthole but when you sit down on the toilet, only a pebble of poop comes out and nothing else. No matter how hard you push, that pebble will be the only thing in that toilet. Thus, resulting in a 'Harry Hu-Poopy'.
I thought I had to shit real bad, turns out it was only a Harry Hu-Poopy.
by Turdsinkerman October 03, 2011