When I was younger (maybe ten or eleven or twelve), I attended Aqua Camp at the YMCA, which was a half-day camp where we did water sports in the pool--water polo, synchronized swimming, diving, snorkelling, and sometimes, we'd play games in the pool. Anyway, on the first day, we drew posters of pool safety rules, and one little girl, who was really too young to attend the camp (she must have been about six, and I think she had ADHD or sometime) decided to do "No riding horses in the pool" for her drawing.