Center lock

(Inside the car)

QQ: Papa, don't forget to lock the center lock

Papa : OK. Good.

Fy: What is a center lock?

QQ: Is a lock so that we will not fall out from the car. If we fall out we will become "cham-cham"

Fy : Ya, if we fall out from the car, we will have to chase after the car and walk back home.