Three vampires walk into a blood bar. The first two order two glasses of blood and the third one orders a glass of boiling water. The bartender thinks it's kind of weird, but doesn't say anything -- he just gives them their drinks.

The next day, the three vampires walk into the bar and order the same thing: two glasses of blood and a glass of boiling water. The bartender still thinks it's weird but doesn't say anything; he doesn't want to be the vampires' next victim.

But when it happened on the third day, the bartender couldn't help but ask why... "Okay, I know the three of you are vampires, so why do you two order glasses of blood but you always get a glass of boiling water?"

The third vampire pulls out a used tampon and says, "I like to make tea!"