I always thought that this song is about escapism, about people, who prefer to "pretend that there is no hell", "keeping themselves doped with religion and sex and TV", 'cause thay don't want to see the truth. "It's safe and calm if you sing along", close your eyes, stop thinking. They are afraid of reality, afraid of everything "extraordinary", so they won't let you into their happy little world if you are seem not to be like others, but if you'll reject your personality and say "yes", they will be happy to see you in the Happy House.
I always thought that this song is about escapism, about people, who prefer to "pretend that there is no hell", "keeping themselves doped with religion and sex and TV", 'cause thay don't want to see the truth. "It's safe and calm if you sing along", close your eyes, stop thinking. They are afraid of reality, afraid of everything "extraordinary", so they won't let you into their happy little world if you are seem not to be like others, but if you'll reject your personality and say "yes", they will be happy to see you in the Happy House.