The newest slime craze has arrived. Whether we call it glorp, glurch, gunge (as it is known in the UK), Gak, Silly Putty, flubber, or slime, we all picture the same green goop made popular from kids’ science experiments and Nickelodeon game shows such as Double Dare. In recent years, slime has seen an unexpected resurgence among kids, teens, and adults alike, especially the homemade DIY slime variety. In fact, an entire internet subculture has formed around this innocently mindless substance. For better or worse, slime is bigger (and messier) than ever. Here’s everything you need to know about all things slime.