"Why did the Koala.....?" joke

Thank you Pieta for this joke submission.... very funny

Why did the first Koala fall out of the tree? It was dead.

Why did the second Koala fall out of the tree?

It was stapled to the first.

Why did the third Koala fall out of the tree?

It thought suicide was in.

Why did the fourth Koala fall out of the tree?

It had a grand piano tied to it's foot.

Why did the fifth Koala fall out of the tree?

It was hit by the piano stool.

Why did the Kangaroo drop dead?

It was hit by 5 Koalas and a grand piano.