During the year without summer (1816) in which Mary & Percy Shelly, Clair Clairmont, Lord Byron, and John Polidori were gathered at the Villa Diodati, Switzerland; Lord Byron suggested, on one night, that each should write a horror story.
During that night, Polidori began writing a short tale which would become the first vampire story ever written in the english language, titled: "The Vampyre."
It should also be noted that during that same night, Mary Shelley started working on a story which would later evolve into the famous novel "Frankenstein."
Vampyres drink donated human blood or will eat raw meat to satisfy the craving.
Friend : Uhh... Dude isn't that dangerous?
Vampyre : No dude don't worry about it. I'm a vampyre.