Dear mum,
Don't ask questions that you obviously know the answer to. Questions were made for you to know the answer, not to waste precious time.

Me: what's the heater switch for the playroom.
Mum: dine.
Me: thanks.
Mum: why? Is it cold?

No mum, it's so unbelievably hot and I want to make the room hotter so we all die.
Yes mum, it's cold. I just asked to turn on the heater in the playroom with my onesie on, the think that is bright yellow with black stripes that keeps people warm in the cold.
Why!?
Sincerely,
Ella, your cold daughter.