why jia not lim .....bangu....explanation pls 
( chiah_
XYZdrink ) is usually used in the sense of
abstract "to enjoy some drink"
( lim--
XYZdrink ) is usually used in the sense of the
actual action of "drink something"
Example:
( Wa\ cheet''' choon_
lim-- kopi-o-kosong ) = "I am telling you that I am
in the midst of drinking kopi-o-kosong"
( Wa\ cheet''' choon_
chiah_ kopi-o-kosong ) = "I am telling you that
what I had ordered in front of me now is kopi-o-kosong"
( Knyia/, lai_ khee\
lim-- chiew\ ! ) = "Come on, let's go and
order some wine/beer/alcohol to drink together !"
( Knyia/, lai_ khee\
chiah_ chiew\ ! ) = "Come on, let's go and enjoy
the atmosphere of getting a booze together !"
See the difference ?