a boy? a girl?

Rachel announced that she wanted to pee......

Mummy : Ok, Rachel, let's take off your pants and you can sit down on your potty
Rachel : Mummy, Nicholas kor kor shee shee like this *show me while standing up*
Mummy: No, no...Rachel, you have to sit down to shee shee.
*Rachel sat down on her potty and started her business. Before finishing, she wanted to stand up*
Rachel : Mummy, Andrew kor kor shee shee like this *wanting to show me the standing up stance again*
Mummy : *so scared of spillage* NO NO Rachel. Sit down....

When Rachel's all settled down again......I tried to explain.....

Mummy : Andrew kor kor and Nicholas kor kor are boys. They shee shee standing up. Rachel is a girl. Rachel shee shee sitting down..... Understand?

Rachel : STAND!

*phew......*