A vampire walks into a bar and asked the bartender for a glass of blood. The bartender goes out and butcher's a pig, get's a glass of blood and serves it to the vampire. The vampire drinks it, pays his tab and then leaves.

Next night, vampire walks into a bar and asked the bartender for a glass of blood. The bartender goes out and butcher's a pig, get's a glass of blood and serves it to the vampire. The vampire drinks it, pays his tab and then leaves.

Third night vampire walks into the bar asks the bartender for a glass of water, Bartender says to the vampire "I'm sorry sir, I don;t mean to be rude but your a vampire correct." Vampire answers yes, Bartender says "well, the last 2 nights you have came in here and asked fror a glass of blood. What makes you want a glass of blood tonight?"

Vampire pulls out a tamponand says "tea time"