Well, the best one I've received...

My friend and I were camping at Disney World, in the winter. The campsite wasn't close to any facilities (something we learned to do for other trips.) So we had to drive for showering etc. Since it was cold, we made and kept reservations to eat at China Pavilion until just before the firework display. We ate more quickly than we planned so sat there drinking hot tea and talking for quite a while, then went out when the show began.

During the middle of the night, my friend needed to use the restroom. It was my car and I had to drive her, since her feet were hurting also from all the walking. We had a few tense words on the short drive, with my asking why she didn't go before we got to the campsite, like I did? That I didn't have to go then. She replied, "Well, you didn't drink all the tea in China!!!!"