aiyah, i always hate act-cool people. but seriously, from my
wisdom and experience, in all i've seen in life, only got 2 types
of act-act people: Guys who act cool and girls who act cute.
in general, guys seldom act cute unless it's those very very gay
and soft types, but i have only seen 1 case so far. girls, even
those in their 20s+, all love to act cute. i don't remember seeing
girls who act cool(although a girl who acts cool is truly cool!
)
some tips, by the way:
1) don't get invovled in un-necessary trouble, meaning that don't
join as CCAs if you can help it; waste of time, considering SG's
local talent. better to use the time to go library, surf porn, play
xBox 360 games or go shop for nice-nice clothes.
2) be neutral to the gangsters; if you are walking along a narrow
vertical pathway in school and they're walking towards you and if
they're part of your class, say hello to them so they don't feel
alienated/offended.
3) don't act cool if you're a guy; will offend the gangsters. last
time in 1998 when i was in sec 2, got one indonesian-chinese guy
quite rich and handsome. always walk like a cool penguin with the
legs motion thrusting left and right, shouder up and down, instead
of thrusting the legs forward as we usually do. in the end, some
gangsters drag him to empty classroom and punch his stomach because
they bua-song his "dao" attitude. ya-ya lah! KNN! serves him right.
i missed the show, though.
if you're a girl, don't act cute. will offend female gangsters and
they're really bitchy about it. first, they'll constantly talk
about you behind your back when they see you, then it comes to
confrontation and assaulting you with barbie doll's leg. KNN. if
you're pretty, then you must act humble and kind. if you're plain,
act really kind and sweet.
from my experience, unlike male gangsters, female gangsters won't
pick on those guai-guai little girls one.
if got female gangsters bully you, pay S$30 per banglah and ask
them to take the female gangsters to male toilet and settle there.
ARK HA HA HA! 
i think the guys here in sgforums also quite willing to help out
for free, although i'm not interested.
that's all,
nikar.