Correcting mummy

One night, I was changing Yan Yan into her pyjamas, she regurgitated onto the bed.
Mummy: Aiya Yan Yan, why you dirty the mattress?
Yiu Yiu: Not mattress la, bedsheet only.

Yiu Yiu has recently started watching Little Einstein, after my colleague bought her a set of three DVDs. In every episode, the four friends will normally go round saving the world, etc in their red rocket. While watching the DVD one night…
Yiu Yiu: Mummy, why they put seat belt one?
Mummy: Yeah lor, they have to put seat belt in the plane also, like we do in our car.
Yiu Yiu: Not plane la, it's a rocket.

Yiu Yiu has been watching a lot of Barney lately. One night, when she asked to watch Barney again…
Mummy: No la Yiu Yiu. You watched Barney already just now. Why don't you do some drawing and painting? (I actually meant colouring with her colour pencils)
Yiu Yiu (face lights up): OK
Mummy: Go sit on your table and draw.
Yiu Yiu: But mummy, I got no brush wor, how to paint?
Mummy (slaps head): Oh yeah hor, you only have colour pencils. So you draw and colour la. Next time only mummy buy paint and brush for you.