Answer:
They don't forget.
John Lennon sang about being this toothy creature.
What king can you make if you take the head of a lamb, the middle of a pig, the hind of a buffalo, and the tail of a dragon?
I love bananas and swing from tree to tree. What am I?
My first is twice in apple but not once in tart. My second is in liver but not in heart. My third is in giant and also in ghost. Whole I'm best when I am toast.
What flies without wings?