Definition: Simblum is a term used to describe someone who is very fond of simulating the actions and behaviors of others while also being completely unapologetically mean-spirited towards them.
An example sentence could be: "Wow, you're really quite likeable when you're trying to simulate some serious social faux-pas. I can tell you know a thing or two about how to actually take down people without giving yourself away though." This line is edgy because it's not just saying someone is mean-spirited but also implies they're deliberately doing something that's seen as inappropriate, which can be unsettling for some people.