Feel free to use my line if a woman expects you to buy a drink.

[Special T]

"I made a promise to myself not to get any girls drunk"

Say this in a very serious tone but with a slight smile on your face.

 

[Proselytiser]

Friend tried this one - 'Geez, do something for yourself for once. I already have one retarded cousin to look after'

Didn't really work but was hilarious

 

[Prodigy746]

SO far i like OP's the best..

 

[horaholic]

"I wouldnt buy you a drink if you were good looking."

Thats reserved for bytches who are obviously being condescending about it. I came up with that when some chick was being a bytch at the end of the bar, and when I walked by her to take a leak, she rudely said "Buy me a drink." and I said that line. Her friend said "She works at Fantasy Girls (strip club) you know." So I said "Oh really? You a bartender there or something?" Best neg EVER! Walked away with head held high after that one.

Sorry op, but yours is lame.