Posted by My Hong Kong (495 days ago)
I don't see any problem with asking. In fact, I think I'd like it because when sexual things are expressed verbally it gets my imagination going. :) However, the gap between the question and the action should be really short. Ask the girl...and if there is no sign of rejection...make your move.
You can leave the bar a few minutes afterwards. :)
(I am based in Hong Kong)