Take a shot any time someone complains about a class being overpowered.
Take a shot any time someone claims their team is bad, or any synonym thereof.
Take a shot any time you hear/see fancy language Blizzard made up for the elves 'eg: Ashnu della-nah, Anu-belore, Sin'dorai'.
Take a shot whenever you die.
You'll be tanked in no time at all unless you follow only one of these.