You just can' reason with kids. You can't win and probably never will.
In my latest attempt to get Emil to buckle up in the car, I told him that the characters in "Little Einsteins", one of his favourite cartoon shows, always wear their seatbealts whenever they start their adventure. The only difference is, the Little Einsteins fly in an aeroplane.
I was so sure of my success that I was smiling even before I finished my sentence. Then came the reply, "...nanti Emil naik aeroplane, Emil pakai la seatbelt...".