Morning after

You woke up in a strange house, and tried to remember how you could come to be here. Not understanding what is happening, you decided to go to explore this strange house. Coming down from the top floor on the stairs, you notice that the house is a mess going on, everywhere scattered cigarette butts and cans of beer. And the worst thing for you is that not close to a living soul! You would quickly get out of here. But how?