Calvin and Hobbes by Bill Watterson for February 10, 1988
Cavlin: Ok, lets test this transmogrifier gun. I want to be a pterodactyl, so you think of one and point the transmogrifier at me. This will be great. I'll terrorize the neighborhood awhile and then you can transmogrity me back to a boy when the national guard comes. Hobbes: What's a pterodactyl? Some kind of bug? Calvin: No no! It's a big flying dinosaur! Don't shoot if you don't know what it is!!