Feel free to add to this list. Here goes!
- An abundance of health or ammo means the games set on "easy"
- You can't click past all boring dialog because the information is actually relative.
- You shouldn't get angry when your toon gets stuck somewhere you shouldn't have been jumping on anyways.
- Never get attached to any one type of weapon, you're limiting the experience and challenge most games are designed for.
- Nerd rage is usually caused by human error but often directed at inanimate objects.
- Your neighbors think you're scary and that's why they refuse the check their mailbox at the same time as you.
- Non-gamers will never understand how awesome Half Life or Bioshock are.
- Doors can't be kicked open because you need to find the key, while doing that you're going to fight two bosses and get pissed off, save and try again later.
- The chest is locked because it wants to drive you crazy, not that there's anything of value inside.
- Falling damage is the most common type of death in WoW. Still want that achievement?
- People who sing randomly over the mic are awesome, join them don't diss.
- Sub-missions give you better rewards then main quest chains.
- There's a reason BFG ammo is scarce, I didn't say it was a good reason...
- Jumping constantly is annoying. Stop it.
- Glitches and "Easter Eggs" are always priceless, even if sometimes they kill you horribly.
- Game related T-shirt references will only be caught by the people you don't want to talk to.
- Never let someone talk you out of a DLC, they're just angry they beat it already and want to brag.
- Never trust someone who uses the " :p" or "=p" smiley.
- If a game comes with more then one installation disc the patch is also gonna be huge.
- Never give out your myspace \ twitter or blog info to a guildy.
- Showing up 30 mins early for a raid, ready to go, will always end with at least three people being late, of those three, one will leave after 1 wipe and you'll spend another hour looking for their replacement.
- Vent is important for strategy sure but its also nice to not have to type while you mash buttons in PvP.
- If more then one person is interested in an item that's dropped, the person with the best gear will win the roll.
- People who stand on top of mailboxes are actually AFK eating pizza.
- Its not laggy because your computer "sucks" but because you have shadows /on
- Dying because you were too busy looking at environment detail is a noble death.
- Dying because you stood next to a wall and shot a grenade launcher is funny.
- Dying because you wanted to beat the game wearing only boots should be an achievement.
- But...Dying because you wanted to be a lone wolf in a co-op game is slap worthy.
- Stealing health packs from medics that are on fire is just bad form.
- Calling pyro's noobs as a spy only shows how terrible you are at being a spy.
- Screaming about demo spam just means you should probably stand somewhere else.
- "Camping" is a skill, get used to it.
- "Dolphin Diving" doesn't work anymore, but keep going, its really funny with rag doll physics.
- Just because a character does something in the games trailer, like hide behind a tree, doesn't mean it'll actually work for you.
- A good sniper doesn't "hack" they just lead you a few feet.
- Riding in a vehicle with someone you don't know can be scary, especially when they say "How I go?"
- Loot everything and later, if you absolutely need to, delete and or drop the bent spoons, folded fabric and potions of night's eye.
- "It's not running away--it's living to fight later"
- Most games don't have falling damage from jumping off a cliff into water.
- Most ladders are evil and will toss you off randomly.
- Any game still using the "butt cramps" dmg engine is awesome.
- If you can't fit through that open window, chances are because it would kill you, so move on.
- Always count your enemies shots, plan accordingly.
- Its not about Red or Blue winning, its about how crazy you can drive the other team.