Guest's Dad invites his friend, Nick, over. Your Dad was in the shower when Nick arrives, so Nick lets himself in and settles on the couch while waiting for Guest's Dad. He turns on the TV. Suddenly, Nick hears something. He thinks it's the TV, but with the louder it gets, he can clearly tell it's coming from upstairs. He doesn't know that his friend has a daughter, so when he goes exploring, he doesn't expect to find a teenage girl on her bed. He goes from room to room, looking for the source of the noise. He nears her door when he hears it grow louder, and he walks in, not thinking to knock.