The Liderc or as I like to call it the Sexy Nightmare Chicken is a type of succubus from Hungary.

The legend goes as follows:

"First, you get a black chicken. You then take it's egg and warm it in a pile of horse crap or your armpit. When the egg hatches the Liderc is born. Where did the chicken go? Who knows. The Liderc will f*ck with your mind before literally f*cking you. It will take the appearance of a long lost relative or lover. From there they will come back every night to bone you, and you start to slip away as you start to die as it humps you and sucks your blood and sit on your chest so that you can't breathe."

Credit goes to the website: Cracked.com