Falling down stairs. You walk down so elegantly, then all of a sudden... boom kerplat poof bifwham!! plop! and you`re all redfaced and flustered while dusting yourself off and of course explaining what happened to MAKE you fall.
When I was younger I had been sick for a week, but my family insisted that I go to the restaurant with them. Midway through the meal I feel like vomitting. I start to head for the bathroom but didn't make it. Threw up in front of where they take reservations, trapping the girl in the box. Then proceeded to go to the bathroom where I threw up some more. I get my act together after wards, look up and notice there are no urinals. It dawned on me that I was in the ladies room, no exit was smooth enough.