Timing

Last night, Luke and I stopped at a rest stop on the turnpike. I needed to use the restroom. We went in one of those family stalls, where we could both comfortably fit. After I finished, I saw Luke pull down his pants and say, "mommy, pee." Luke has never been interested in potty training. Why now? Why in the most disgusting of all facilities? I decided to pull off his diaper and hold him up over the toliet. What will he come up with next?