Science Gang Tattoos by Tom Gauld, created for New Scientist.
A brilliant little illustration of possible science-based gang tattoos. The names aren't the best (though Particle-Physics She-Devils has a special place in my soul) but the actual imagery is spot on. I'd love to revisit this idea at some point and come up with my own variation for us Evolutionary Biologists (or possibly Software Engineers, I can rep both crews)!