<P> This verse is usually followed by three more, which follow the same pattern but say: "If you're happy and you know it, stomp your feet!", "If you're happy and you know it, shout / say' hooray'!" or "shout / say' amen'!"; and, "If you're happy and you know it, do all three!" Other versions of the song tend to say "then your face will surely show it" in place of "and you really want to show it"; the form "then you really ought to show it" has also been used . Many variations on the substance of the first three verses exist, including: </P> <Dl> <Dd> "...shout / say,' Hooray'!" </Dd> <Dd> "...slap your knees!" </Dd> <Dd> "...slap your legs!" </Dd> <Dd> "...turn around!" </Dd> <Dd> "...snap your fingers!" </Dd> <Dd> "...nod your head!" </Dd> <Dd> "...tap your toe!" </Dd> <Dd> "...honk your nose!" </Dd> <Dd> "...pat your head!" </Dd> </Dl> <Dd> "...shout / say,' Hooray'!" </Dd> <Dd> "...slap your knees!" </Dd>

Who wrote if you're happy and you know it