A girl walks into a bar and asks for a shot of Vodka. The bartender gives it to her, she drinks it, and passes out. The bartender tries to wake her but can't. When he sees that no one else is in the bar he locks the door and has his way with her.
The next day the girl walks in and the bartender calls 5 of his friends and tells them what happened. She orders a shot of Vodka and passes out. They all have their way with her.
The following day 10 guys show up at the bar. She comes in and orders a shot of Vodka, drinks it, passes out and all 10 have their way with her.
The fourth day she walks in and the bar is packed, standing room only. She walks up to the the bar and orders a shot of Tequila.
The bartender looks and says, "But don't you drink Vodka?"
She replies, "I used to, but it makes my fanny sore."