Why was the math book sad?

Why did the two red blood cells break up?

Do you know the name Pavlov?

Did you hear the crazy rumor about butter?

Which animal loves to scare trick-or-treaters?

How does a single horse RSVP to a party?

Why did the patient reveal secrets to her dentist?

Who is friends with everyone at school?

How do automobiles fly?

Where do lawyers go for summer vacation?

What do you call a fly without wings?

What did the adding machine say to the cashier?

What do you give a sick lemon?

What fish only swims at night?

What's a pirate's favorite letter?