Description: Price Stern Sloan Mad Libs Books. The idea is simple. Someone asks for a part of speech: a verb, a noun, an adjective, or an adverb. We've included definitions and examples of the parts of speech in case you've forgotten. Players call out their ideas to fill in the blanks and in the end, you have a story reeling from one silly sentence to another until nothing makes sense. That's what you call a Mad Lib, the world's greatest word game. Players have been howling with friends or laughing all to themselves for over 35 years!