Forum Self Delete would definitely.. well there's two kinds
SBS - When you hate BLF and leave by saying you're going to kill yourself.
Seppuku - Honorably leaving by just leaving.
Columbine - Posting gay research, gore etc.
It Wasn't Me - being "hacked".
Flamethrower - Flame people into infinity.
Lando - Hack people, commit Columbine, flamethrower.
Okay well there's more than two kinds.
I'm Sorry.. - Faking a relative stating that you are dead, then disappearing.
Annoying - Spam forums with random posts, random threads, random links, and add lots of emotes.