Black Lady
Actually, it's really a second hand story. I've heard it from my classmate, Grace. She used to tell me spooky stories of ghosts.
Now, it happened to her cousin who's studying in a big university here in the Philippines. It was an over night research work in the school and she got this urge to pee. But no one would go with her to the CR, so she just went alone. Combing her hair, she looked at the mirror and to her surprise, a lady dressed in black was standing behind her. It had blood all over the face. When she began to say a prayer, she made mistales and the lady repeated it in a mocking voice.
Think how scary is that, huh!