wun one lah, wah piang u dun believe u nxt time wait at the msia
side customs and see, got how many bikes how many ppl everyday just
like that chiong thru without chopping. and i don't mean the jiu hu
kias, i mean the sg lang going in and out of msia.
come out that time oso the same thing. at most if they stop u that
time u slip a 10RM inside your passport then show the officer, can
liaoz. 
but just let u know.
if u no chop, means they got no official record that you ever
entered that country. but sg side will have official record that
you left singapore.