A Irish man is sitting at a bar having a few drinks when he notices a very attractive lady sit down at the other end of the bar and order a drink. 

The irish guy calls the bartender over and says "whatever she is drinking give her another one and tell her it is on me."

The bartender replies "I don't think you want to do that."

"What do you mean?" yells the irish guy, "Send her the drink!"

"O.K." the bartender replies, "but I don't think it is a good idea."

"And why not?" asks the irish guy.

The bartender leans over the bar and very softly says "because she's a lesbian."

"I don't care, send her the drink." says the irish guy.

So after the lady gets her drink the irish guy very casually strolls down to the other end of the bar and sits down next to her and says, "so what part of Lesbia are you from?"