It seems like every single time we land and have to go through immigration/customs, my 12 year old son has to stop to pee, allowing all of the people from the back of the plane to get in line ahead of us when we would have had a great lead. "But, Mom, the seat belt sign was on, I couldn't go on the plane". I tried to tell him that means keep it fastened unless you have to go to the bathroom, but he's a stickler for the rules. He's going to make a great FBI agent (his career goal).