You may know Hank Green as the Tiktoker who tells you not to eat grass, or maybe the host of SciShow or CrashCourse teaching you sick science facts in class, but the deep fans know him as a YouTuber and author of The Carls Series (An Absolutely Remarkable Thing and A Beautifully Foolish Endeavor).
Well this sticker is a reference to the magically appearing monument to a being lovingly nicknamed Carl in the first book, complete with bi pride colors as a nod to the main character of the stories. In blue text, the background lists all of the cities the Carl monuments appear in the novels.
