Insult people and then tell them they have no sense of humor when they object.
Go on the attack (verbally) and then pretend to be the victim.
Play the victim card on all occasions.
Write a long post about how awful everyone is on the forum and how you're never posting here again. Then lurk and read the responses to your thread. Especially good if you think people will beg you not to leave.
Recant, so you can stir up more trouble and then write another I Quit post.