4 stairs, 4 squares

A young woman was taking care of her baby when she remembered that she had some chores to do. She put the baby down in the crib and started working in the kitchen. After a few minutes the phone rang and she picked it up. The man on the phone said, “4 stairs, 4 squares,” and then hung up. Five minutes later the phone rang again and the man said, “4 stairs, 4 squares,” and hung up. Five minutes later the same man calls and repeats, “4 stairs, 4 squares,” again. The woman says she’s going to call the police if he calls again. He calls and repeats the same thing, so she calls the police. The police trace the call and they find out it’s coming from inside her house. The man calls again and says, “4 stairs, 4 squares.” The woman, now very scared, replies, “The police are on the way.” The man says, “Wait… go up 4 stairs,” and he hangs up. The woman goes up 4 stairs and finds her baby cut up into 4 squares.