You probably know a truther. They're all over! Learn how to catch them off guard before you, too, start believing the Earth is flat!

"The Earth is flat and surrounded by a wall of ice."
"Oh, really? What, did you hit your head on it?"
Fed up with nodding silently along when you hear the endless nonsense about our world today, climate change, or any other topic that isn’t and shouldn't be rocket science? This humorous little guide will help you sharpen your comeback skills and master the art of the punchline. Guaranteed to work against any conspiracy theorist!