…when you wear diapers while playing.
…you read and post about WoW when the server’s down.
…when you addict your children to WoW.
more?
You compulsively hit Refresh on the server status page even when it’s not scheduled to be up yet.
You pass up sex because there’s a raid and you don’t want to miss out on the DKP.
You host an ingame birthday party.
Your first question to someone you are interested in is not “what’s your sign” but “what’s your spec”?
Your opinion of someone you meet in RL changes when you find out they’re Horde/Alliance.
You won’t even consider hanging out with someone who’s not on your server.
You get banned for life from the game for using an auto-fishing bot - then CHANGE BANKS so you have a new debit card so you can set up a new account. And then turn down work for a week so you can power level back up to 70 in time for the next major raid. (True story: former guild mate).