A vampire walks into a bar, he goes over to the bar and says"Bartender I would like two shots of blood." The bartender reaches behind the bar, and pours him two shots of blood.
Another vampire overhears, and decides he would like two shots of blood. The bartender once again pours him two shots of blood. Both vampires drink their shots.
A third vampire walks over to the bar, and the bartender, without being asked, begins two pour two shots of blood for him. The 3rd vampire stops him, and says"I'll just have two shots of hot water." The bartender looks confused, but pours the shots. Finally, he has to ask"I understand the shots of blood, but why do you want just hot water?"
The vampire reaches into his pocket, pulls out a tampon, and exclaims "Tea Time!"