Tusk brushes his teeth everyday
To keep them shiny, it’s the only way
Teeth are special, so you must try
And they will sparkle when
You say “Hi”!

Tusk’s poem had variations:

So they will sparkle when You say “Hi”!

To sparkle when you say “Hi”!

You say “Hi”!  (on a 5th line)

So they sparkle when You say “Hi”!
(see Tuck hang tag in Additional notes)