Why do rocket scientists take everything so seriously?

How does the moon cut her hair?

Why do math teachers love March?

What do you get if you cross a sheep with a kangaroo?

Why did my sister bury her lightbulb?

Why is Michael Phelps never late?

What do librarians use as bait when they go fishing?

Why was school so much easier for cavemen?

Why can you never find the number nine?

Why did the Secret Service bring a herd of cows to the White House?

What do you call a joke book for chickens?

How many chimneys does Father Christmas go down?

What is an elk's favorite dessert?

How expensive is swimming with sharks?

What did the pecan say to the walnut?