Or, wait: how to tell if your child is not ready.
In all fairness, Zoe is perfectly aware that this is a potty seat. She would just rather stick it on her head and proclaim, “I’m in space. I’m in space!”
I blame Mouse on the Moon, one of those Usborne look-through books where, as you might guess, Mouse goes to the moon. I’m not sure if Zoe is wearing a space helmet, or if (spoiler alert) she’s looking in the crater at the moon mice and their cheese.
I’ll have to ask her next time she goes to outer space.