Why did the scientist remove his doorbell?

Why did the astronaut's restaurant on the moon fail?

Do you know the name Pavlov?

What's the ideal place for a dog to work?

Why are there so many playgrounds in Pennsylvania?

Why didn't the cheese want to hang out with the knife?

Which big cat loves to drive?

Why is the number 4 so smart?

Nurse, how is that little girl doing who swallowed ten quarters last night?

How did the French fry propose to the hamburger?

What do you call a fish wearing a bowtie?

What did one pencil say to the other on the first day of school?

How do you care for a sick bird?

What did the train engineer's friend tell her when she did something crazy?

Why is spring the oddest season?