This is a quick practice on using the definition of a derivative, alternative definition, and differentiability. I use it in BC to quickly review the concept of a derivative. Students answer the questions to complete the joke. I don't include a key because upon completion, the joke answer will act as a key. It is a Word Document so you can edit as you see fit. Some problems are multiple choice while some are short-answer. I require students to show work to all types of problems so questions are spaced out to allow students to put work directly on the handout.