Posting this here because its only about 40% serious.
There are several types of gamers:
Real Roleplayers: Real Roleplayers play characters who are hopelessly gimped because wanting to play someone competent is power gaming.
Real Min-Maxers: Real min-maxers know how to push the system to its absolute limits, and can probably calculate whether it is better to buy more Dex or the things Dex influences in any game system while jerking off or even while having sex (this last has not been proven, as we have yet to find any signs they're able to get laid).
Real Morons (RPing): "My character would do this!" "Your character is a total dick/idiot/pain in the ass." "Yes, but I'm really roleplaying!"
Real Morons (gaming): "I cast fireball in a 10x10 room...which my allies are fighting in."
Ideal Players: "I have a character concept. I've some ideas on how to translate that into game terms, what would work best in your campaign?"
Rule Freaks: "It isn't specifically permited in the rules, therefore it is forbidden!" Some prefer "It isn't specifically forbidden, so it is permited!" Either way, their goal in life is to be the dominant force in terms of knowing what the rules are for the game. If they're DMing, this might be bearable. Otherwise, they're going to end up as dicks.
Setting Haters: "Even though there's no hobbit knights I want to be one because isn't that so cool!" and arguing that long past the point anyone is willing to accept the idea. Not to be confused with people Ideal Players who just have oddball ideas. There are oddballs out there, but Ideal Players know how far that can be pushed, Setting Haters don't (or don't care).
Natural newbies: People who don't get the purpose of house rules. They think the game is perfect as is.
Simps: People who think simpler = better. Even when something is simplified to the point where its removed despite being important.
Nitcounters: People who think more details are better by definition.
Storydictators: Railroading DMs.