Where do belly buttons go to college?

Why did the sparrow go to the library?

What kind of pie does a bird love to eat?

Why are trees always so positive?

What do cows say when their children whine over nothing?

What instruments do imaginary friends play?

Why do bees buzz?

Why did the doctor let his dog help with his patients?

What did the tiger eat after having his teeth pulled?

What do you call a gathering of single hikers?

Why did the crocodile run his mile so fast?

Why did the football quit playing in the Big Game?

Why are fish such good architects?

Why are baseball games at night?

What do they serve at birthday parties in heaven?