When you're close enough to your destination that it doesn't make sense to stop and poop, but far enough from home that you wouldn't have been able to go before you left.
Bill passed the rest stop and tightened his grip on the steering wheel. It was going to be close, since he was 15 minutes from his grandma's house, but he had passed the Poop of No Return.
by milkacows_mom April 8, 2010