A Vampire orders a water...

One evening, a Vampire walked into a bar.  He walked up to the bartender and asked for a big glass of water.  The bartender was confused.

"I thought you drank blood" the bartender said, "I was expecting you to at least order a bloody mary or something."

The vampire shook his head.  "No," he said, "I want water."

"But why?"  The Bartender asked.  

The Vampire rolled his eyes and then pulled a tampon out of his cape.  "Because I'm making tea."