Three Vampires

Three vampires walk into a bar and sit down at a table. The waitress comes over and asks the first vampire what he would like. The first vampire responds, "I would like some blood."

The waitress turns to the second vampire and asks what he would like. The vampire responds, "I would like some blood."

The waitress turns to the third vampire and asks what he would like. The vampire responds, "I would like some plasma."

The waitress looks up and says, "Let me see if I have this order correct. You want two bloods and a blood light?"