that is so cute!
It reminds me of the time my little boy took a bath with hubby when he was just a wee one, and he pooed in the bath while hubby was in there. Haha, I still tease him about it!
When I was small (about 5), Mom used to put my brother in the wading pool with me, buck naked. Randy would, immediately, dump a load. This meant emptying the pool, scrubbing it and refilling.
I used to BEG Mom, not to put him in my pool. He did it, every time. Its a wonder, that I didn't drown him!