A rather large well dressed female walked into a bar and raised her right arm displaying a big hairy arm pit and asked "Which one of you gentlemen is going to buy me a drink?"
An old drunk sitting at the end of the bar whips out his wallet and says "I will"

The barman serves the woman a drink and she skulls it straight down.

She then raises her right arm up again displaying her big hairy arm pit and asks "Which one of you gentlemen is going to buy me a drink?"

The same old drunk sitting at the end of the bar whips out his wallet and says "I will"

The barman pours her another drink and whilst she is drinking it he walks up to the drunk and says "Why are you buying that woman these drinks?"

The old drunk says "Any ballerina that can get her leg that high in the air deserves a free drink."