Smile a Little More is a song that's sung by Cowboy Curtis in the episode Store.
If you smile a little more
And I smile a little more
The whole wide world would be a happy place
By a whole lot more
If you laugh a little more
And I laugh a little more
The song I wrote but maybe I can
Sing you a little bit more
- Due to the secret word being "more" in the episode where it's sung in, the secret word is featured in the song lyrics six times, which everyone screams to.