ExplainTheJoke

What's funny about this joke: "Why don't scientists trust atoms? Because they make up everything!"

Can you add a humorous twist to this joke: "I told my wife she was drawing her eyebrows too high. She looked surprised."

Explain this pun with some wit: "I'm reading a book on anti-gravity. It's impossible to put down!"

Why is this one-liner amusing: "I asked the librarian if the library had books on paranoia. She whispered, 'They're right behind you.'"