Frazz by Jef Mallett for December 11, 2015
Boy: I heard our textbooks have a "teacher's edition" with all the answers. Frazz: Your books have all the answers in them, too. Boy: Yeah, but they have a lot more than just the answers. I'm not sure I like what you just did there. Frazz: I can make it more interesting and give it some context once you decide you're into that.