Indicator

Ella (from the back of the car): Mum, can you stop that little noise.
Me: That's the indicator, Ella, I have to use it.
Ella: Why?
Me: So other cars can see that our car is going to turn so they don't bump into us.
Ella: Can you stop that yellow thing, mum. It's making a noise.
Me: It's the indicator, Ella. I have to use it.
Ella: Why?
Me: So other cars can see that we are going to turn.
Ella: Thank you mum. Thank you for stopping the noise.
No, there is the noise again. Mum, stop that noise, it's annoying!