A girl travels to Prague on holiday and gets bitten by a vampire.
She proceeds to suck the energy out of everyone around her. They die and she finds herself alone. She calls her lover overseas.
“Darling, I am afraid I’ve become an energy sucker.”
“You mean a vampire?”
“Yes. It’s something along those lines, except my empty body can walk around during daylight hours.”
“I don’t feel particularly energy sucked right now.”
“That’s because I went to the pool earlier. I circled the lane with a faster swimmer. Sucked the energy right out of him with the help of the water.”
“Ah, yes – energy travels quite efficiently through water. Well, I am glad you found another source of energy besides me.”