I maintain that there's only one thing that boys can do that girls can't: pee standing up without making a royal mess. There are times when I am jealous of the point-and-click interface (peeing in the woods or in icky bathrooms come to mind), but am generally happy with my plumbing.
Well, it seems I may have been proven wrong.
Sophia's daycare teacher told me the following:
"Yesterday, Sophia went to go pee, and before we could stop her, she pee'd standing up. And didn't spill a drop!! I was scratching my head as to how she managed that one."
I got a good laugh out of it, and darn if I'm not proud of her. And, a bit jealous. And, questioning the laws of physics. :)