Ballerina
An Irish lady goes into a bar and raises her arm to gain attention, displaying a very hairy armpit. "Who's going to buy me a drink?" she demands.
Everyone looks away and ignores her except one drunken guy in the corner. "Buy the ballerina a drink" he shouts in a broad Irish accent.
The lady downs the drink and raises her arm again (displaying her hairy armpit). "I want another drink; who's going to buy it?"
Again silence, except for the drunken man in the corner. "Buy the ballerina another drink" he says.
The barman is puzzled: "It's your business if you want to buy her a drink" he says, "but why do you call her a ballerina?"
"Well" says the drunken Irishman, "Any woman who can raise her leg as high as that just has to be a ballerina."