If he could kick the door, he can't be in such an urgent state
lah. If its really urgent, you'd be standing cross legged already.

Anyway, maybe the guy inside found a book from the maternity
section and was reading it lah. What to do? Censorship here so
strong that some of us have to get our cheap kicks this way mah
(but not me hor).
Best way is to have toilet doors like they had in England. Put 10p
in, after a certain time, the door automatically unlocks. If you
want time extension, you have to somehow quickly rush out and put
another 10p in.
Also, install cams like those traffic red light cams, speed cams,
etc. Kick the door only the cam takes your picture. Then you go to
court, judge gives you 12 public toilet demerit points, banned from
using public toilets for 2 years, etc. 