Yeah, not being able to carry the child is no excuse, fuck I used to throw mine around all the time at that age. They were the ball between the wife and I in a slightly risky game of catch. But yeah, sometimes kids get caught short, they're not as clued up to the warnings as adults are, and have to go. I had to call a security guard/janitor type at museum once as my daughter couldn't stop herself, she was a bit younger though I think. Humans/thin people do thjs too.