Following is the definition occording to:http://www.urbandictionary.com/define.php?term=lulz
Beginning as a plural variant of lol, Lulz was originally an exclamation but is now often used as a noun meaning interesting or funny internet content.
Lol -> lul; lols -> luls; lolz -> lulz.
Lulz is the one good reason to do anything, from trolling to rape. After every action taken, you must make the epilogic dubious disclaimer: "I did it for the lulz".
This has been pioneered by encyclopedia dramatica, famous for posting a fake craigslist add and then listing the personal info of those who responded.
"Why did he post a suicide note on livejournal before killing himself?" "I hear he did it for the lulz."
Based on this definition, I have never seen any "lulz" on this Board. Marty and the Admin's would "delete" them!