Gabriel went on car trip with uncle and grandma.
Grandma (to Garbriel's uncle): Wei Yu, you just got your license, do drive carefully and don't drive so fast like your brother in law.
Gabriel : grandma, who is brother in law?
Grandma : your daddy
Gabriel : but grandma, my daddy don't drive very fast.
Grandma : Who says he don't drive fast... he drives very fast..
Gabriel: grandma, can you see my daddy's car when he drives?
Grandma : yes, i can see your daddy's car when he drives
Gabriel : well, in that case my daddy is not driving very fast, else you will not be able to see his car. Fast car zooms past.
Grandma : .....(speechless)