Read the commentary under the map. There’s some good stuff in there. Most poignant to me is the Esperanto taunt Estas Volapuk al mi! (“It’s Volapük to me!”). Volapük is another made-up language, and it’s so uncool that even the Esperanto speakers make fun of it. Man, if you can’t sit at the same lunch table with the Esperanto speakers, you are one sad wanker.