Make up the end of a joke

Vampires in bars are Christmas, and people are going out to trick or treat. A bartender is on the night shift. He looked out. Everyone in the street is wearing strange clothes. He spoke softly. He picked up a glass and began to brush it. At midnight, a guy dressed as a vampire came in, sat on the stool and said, "Hello, I'm a vampire. Give me a glass of human blood. " The bartender looked at him doubtfully. "No, you're not. You are just wearing this dress. " "No, no, really," he insisted. "I am really a vampire, and I want to drink a glass of human blood." "Ok," the waiter said, and walked out of the kitchen with a glass of blood. He quietly gave it to the vampire, and the vampire immediately drank it. "Thank you," he said, and left the bar. An hour later, another vampire came in, sat on the bench and said, "Hello, I'm a vampire. Give me a glass of human blood. " "Ok," the waiter said and went back. After coming out, he took another glass of blood and handed it to the vampire. The vampire drank it, thanked him and left. Another hour later, a vampire came in and did it. "Hi," he said to the bartender, "I'm a vampire …" "I know, I know," the bartender interrupted him. "You are a vampire, and you want a glass of human blood, right?" Well, no, said the vampire. I am a vampire, but I always drink boiled water. "Of course," said the poor waiter. When he brought him a cup of hot water, he handed it to the vampires and said, "You don't know, I have two vampires here who want to drink human blood. Why only drink water? " The vampire didn't answer. He reached into his pocket and took out an old rope: "It's midnight snack time. "