I know some guys with amazing way's to chat up a lass, or get her attention.

One guy goes up to them and asks:

"Can I pull you?" 99% of the time it works.

Another things he does goes something like:

HE: "Are you a virgin?"
SHE: "Well, no..."
HE: "Can I shag you anyway?" And it works.

Someone else I know was in a pub with a couple of his mates, and one said to the other two "Bet you can't pull that chick". So they tried, and failed. The guy who set the challenge said "Right, watch this". He waited until she was leaving, stuck his foot out, and tripped her up - she fell on her face, smack! The guy looked down at her and said "Now I've got your attention, can I get you a drink?" She accepted, and they ended up being two's company in the hotel.