Thanks to horror films we tend to think of Vampires as belonging strictly to Transylvanian forests, only coming out at night to prey on the unwary. Even the film 'Interview with a Vampire' still stuck with the idea that Vampires were once human, and basically look the same as the rest of us (apart from the teeth, and maybe a big blue vein in the forehead. 
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However, we Welsh have slightly different Vampires. These are not human in appearance, but more likely to resemble a well turned piece of oak furniture. Yes folks, in Wales if a vampire attacks you it's more likely to be on the leg, bum or arm than on the neck!
Vampire furniture is a term used to explain old furniture that inflicts odd marks - bruises or scratches - on anyone who uses it. One particular instance was an old four poster bed that 'attacked' anyone brave enough to sleep in it. It's a very old tradition and for all I know exists elsewhere too, although my own knowledge of it is limited to Wales.
Now - sleep tight, won't you? 