On our trip in October my ds (3.5) decided he had to go potty 10 minutes before the parade. We left dh at our spot and took off for the nearest bathroom. The first one we found had a long line going out the door and I told ds we were going to have to wait. He yelled out "mommy...my poopy is coming NOW!!!" Luckliy the other women were sympathetic and let us go ahead of them.
THEN...it seemed like my ds was taking forever in there and I kept checking my watch so would not miss the start of the parade. I finally rapped on his door and asked him what he was doing in there. His response..."I'm reading the paper."