of cause there will be some lao pui. very hard to not recognize
them. if they got tattoos, most probably they are 1. because
nowadays got 2 type of ang gong siao, 1 is those punk rocker and 1
is ah beng. in the 60s 70s 80s, dont think the punk rockers arrived
in singapore, so mostly is those gangsters that put tattoos.
but back to the topic, u should have fought back. its a bit stupid
but imagine if u walk away, next time u see him or he see u, u sure
damn paiseh. i would have probably pueh with him for few sentences
and all hell will break lose. anyway, if they really got alot of
people, u should just call your friends come down. although its a
very stupid way. 
