These hand drawn posters by Designer, Bas Koopmans are beyond cool (if you are a child of the eighties and nineties). If you take half an hour and look through his website, it will BLOW YOUR MIND! In the 9th grade, I was obviously ahead of my time because my best friend Charise and I also hand wrote the lyrics to Kriss Krosses "Jump Jump." My guess is that Bas Koopman is not so dorky as to then proceed to memorizing the dance routine. Just a hunch.