Myths/Urban Legends/Folklore?

well here is one. This girl is in a play and she want her roomate to go see the play she refused cause she had to the library. so she went to the library and didn't back until late so when she got there she went to bed she woke up in the middle of the night by the sound of a rocking chair and her romate saying lines from the play she told her to be quite over ad over then she got to sleep. she woke up late the next morning late and was almost late for cl she saw her roomate sitting on a chair she tapped her on the shoulder then her head fell off!