When my son was about 5, he was upstairs sleeping & I was in the kitchen on my laptop. Out of nowhere, my son comes in the kitchen, pulls down his pants, and pees right in the middle of the floor! Then he pulled up his pants & went upstairs back to bed like it was no big deal
The next morning, he didn't remember a thing. To this day, he thinks I'm making the whole thing up. People do crazy things when they sleepwalk!