"The Viper" is the twenty-fourth story included in the book Scary Stories to Tell in the Dark.
A widow, living alone in her apartment building, gets a phone call from a man who calls himself the viper and says that he is coming up. The woman hangs up thinking that it is just somebody fooling around, but he calls three more times saying that he is coming up. She calls the police and they say that they will be right over. She hears a knock at the door, she thinks it is the police and opens it to a little man. He says, "I am de viper. I vish to vash, vipe de vindows."