Why don't you smile? My teeth would get cold And you know that It's not that I'm sad It's not that I'm down Why don't you smile? I just don't want you to care It's really no big deal That I don't smile But I still think that you're swell Why don't you smile? My teeth would get cold And you know that You know that it's not that I'm sad And it's not that I'm down, no, no Why don't you smile? I just don't want you to care It's really no big deal That I don't smile But I still think that you're swell And Erika's decked out and down on the floor She's thinking of someone she's thought of before And it sure ain't me That crosses her mind And that's why I don't smile most of the time And oh, oh You just turn it on like a switch Turn it off