The whole song is:

Kookaburra sits in the old gum tree.
Merry, merry king of the bush is he.
Laugh, Kookaburra, laugh, Kookaburra,
Gay your life must be.

Kookaburra sits in the old gum tree,
Eating all the gumdrops he can see.
Stop, Kookaburra, stop, Kookaburra,
Leave some there for me.

Kookaburra sits in the old gum tree,
Counting all the monkeys he can see.
Wait, Kookaburra. Stop, Kookaburra.
That's not a monkey, that's me!

Ti"Now that it's STUCK in my head, it might as well be stuck in everyone else's"ci