It also came with these additional interchangeable balloons (below) to demonstrate the subject of the song, so that he could replace the long balloon with the shorter "Happy Birthday to You!" Get it?
And though I will always have a warm spot in my heart for Rufus, my personal favorite can always be recalled with the lyrics: "He was a hairy bear/He was a scary bear/We beat a hasty retreat from his lair/and described him with adjectives."