It's Halloween and everyone's out trick-or-treating

It's halloween
And everyone's out trick-or-treating.
A bartender is working
The late-night shift at the bar.
He looks outside
And sees everyone in crazy costumes.
He sighs and picks up a glass
And starts cleaning it.

At around midnight,
a guy in a vampire costume walks in
And sits at the bar.
He says to the bartender
"hi. i'm a vampire
And i'd like a cup of human blood
Please."

The bartender looks at him skeptically. "
No you're not.
You're just wearing a costume."

"no,
No, really,"
he insists.
"i'm a vampire
And i'd like a cup of human blood please."

"alright,"
the bartender says.
He goes in the back
And comes out with a cup of blood.
He gives it to the vampire
Who drinks it right away.

"thanks," he says, and leaves.

An hour later another vampire comes in
And sits at the bar.
He says "hi, i'm a vampire
And i'd like a cup of human blood please."

"okay," the bartender says
And goes in the back again.
He comes out with another cup of blood.
He gives it to the vampire
Who drinks it and leaves with a 'thanks'.

An hour later a third vampire comes in
And sits at the bar.
"hi," he says to to the bartender.
"i'm a vam..."

"i know, i know,"
The bartender interrupts.
"you're a vampire
And you want a cup of blood right?"

"um, no,"
The vampire answers.
"i am a vampire,
But i'd just like a glass of hot water please."

"sure" the bartender says.
He pours him a glass of hot water.
As he gives it
To the vampire he says
"you know, there were two vampires
That came in before you that wanted blood.
How come you're just asking for water?"

Without answering the vampire reaches
Into his pocket
And pulls out a used band-aid.

"tea time."