It's rude to make too much noise around other people.
John is at home getting ready to watch a movie downstairs and his roommate Eric is upstairs studying.
John wants to really experience his movie at home with surround sound.
John puts on his wireless headphones and plays the movie really loud through them.
John plays his movie full blast and the volume can be heard throughout the house.
Eric appreciates John's concern and thinks John is a good roommate.
Eric resents John terribly and thinks of moving out and ending the friendship.