Everyone knows what a griefer is. For those who don't, it's a player who logs into an online game simply to aggravate other players. It can be very annoying, however it can also be very fun/funny. Follow this guide to become the bane of some gamers' existence whenever they play Halo 3.
Step 1: Gain the Lead, then hide somewhere elaborate (The Funny Part: Not only is this funny, it can also be very helpful in winning the game. The opposing team will have a very hard time coming back.)
Step 2: Camp (The Funny Part: If you are lucky enough, you will get an enemy team made up of little kids. Little kids tend to whine more and once, I even made one cry.)
Step 3: Steal Your Teammates' Kills (The Funny Part: This is almost always going to get your teammates very angry.)
Step 4: Shoot (but don't kill) Your Teammates (The Funny Part: If you shoot your teammates, eventually they will try to kill you. Let them, then boot them from the game when given the option.)
Step 5: Block a Door or a Path (The Funny Part: I cannot tell you how to do this because I don't know how.)
Step 6: Say (or yell) Annoying and/or Vulgar Things (The Funny Part: Simply the reactions of both teams is good enough. The only downside is that they will probably mute you.)
That is all for now. If you want to try this, go ahead. I may add more later.