i dunno how to sexplain, but something like u pucker ur lips in
a kissing manner, n then suck in air to make a high pitch squeak
sound.
to signal or get ur friend's attention.
is it considered an uncultured n uncouth mannerism?
is it normally used by ah beng or ah lian??
do u guys do that amongst ur friends??
nowadays at this time n age, still got ppl do like that?
n how did such a call sign originally came about?