This would actually be a pretty funny mug for all those people who can't stop talking about how much they hate coffee.
I said something along the same lines a few pages ago, and I think that disgruntlement over everyone suddenly liking something you got made fun of over is pretty universal and, on its own, isn't that terrible. The occasional autistic meltdown over it is forgivable, I think, especially if you're self-aware that it's a silly thing to be upset about.
But when your CONSTANT state is "I'm a REAL FAN of X and I WILL NOT tolerate these IMPOSTERS," that's when it gets to be really terrible. No one wants to hear about how awful it is that there are now legions of Chads in your fandom keeping you from getting laid by geeky cuties or post on Tumblr about how terrible it is that girls who dare to be mildly attractive are wearing anime shirts from Hot Topic.
Geek shit just isn't that serious.