Why do birds fly south in the fall?

What did the tree say after the long frigid winter?

Why is summer always sad?

Why did the tilapia roll his eyes at the sea captain?

What's a science teacher's favorite type of tree?

How much does it cost to swim with the sharks?

Why did the chemist read the book on helium so fast?

Where do fishermen look to hire more crew?

Why did the scientist remove his doorbell?

What do you call it when Batman skips church?

What do you call it when someone becomes a vegetarian?

Why don't koalas categorize as bears?

Why did the sparrow go to the library?

What horn never makes a sound?

What do you call a knight who hates fighting?