From WhatPort80

Anti-lulz, like anti-matter for matter, are the exact opposite of lulz. Anti-lulz can be described as anything and everything that is serious business, like the internets. Anti-lulz is extremely rare and can only be produced in environments that are toxic to all non-stupid human beings, such as Uncyclopedia, Gaia Online or Facepunch Studios. However, anti-lulz, much like anti-matter, will create a violent explosion of Spartan proportions when it touches its pro-lulz counterpart. This explosion would destroy everything in its path.

Anti-lulz can also be the feeling you get when you have been trolled at someone else's expense. Emos are the major producers of this brand of anti-lulz, which was once known as "frunz".

Recently, another form of anti-lulz revealed itself in the shape of The Lulzkiller. The Lulzkiller doesn't even hesitate on forging an unholy alliance with the devil. Some argue that The Lulzkiller is the supreme avatar of anti-lulz.

The sound of anti-lulz

Anti-lulz is emitted mainly in environments filled with fail (along with trace amounts of Jenkem). Anti-lulz is also usually accompanied by anti-drama, which consists of the internets flowing freely with nobody ever fighting with anyone else, evar. In severe cases of anti-drama, Jocks and Emos have been seen hugging, but they vehemently deny any such action ever taking place. They refuse to admit that they did it for the anti-lulz, and they must be made to suffer the brutal consequences for their anti-lulzy behavior. Anti-lulz has only been recorded once due to the danger of hanging out in such unlulzy environments; the recorder, Martin Jeston II.It sounds a little like this;

The easiest way to hear anti-lulz is to buy at least 2 seasons of The View and force your cat to watch it. DO NOT WATCH IT YOURSELF. Alternatively, when the inevitability of your cat's death occurs, you must record its death rattle. This is anti-lulz.

Jeston's recording remains the only surviving documented recording of anti-lulz known; it was taken from a serious article on Uncyclopedia. The sound of the anti-lulz while the idiot types on his keyboard is extremely disturbing, and anyone under the age of 9,000 should not listen to it.

Oh, the horror.

I did it for the anti-lulz

The dubious disclaimer that must be said whenever causing anti-lulz in order to clear your conscience. However, you will need to say it more than three times in order to do so, unlike "I did it for the lulz", because anti-lulz is very hard to forgive. For instance, if you hold open a door for a jerk, you did it for the anti-lulz; to purposefully prevent lulz.

Causing anti-lulz is now classified as a war crime and will result in brutal consequences. A group called The Anti-Lulz Team of America, which specialized in killing American lulz (the best and most fattening kind) was formed in 1999 but soon changed its name to LJ Abuse, with moar lulzkilling power than ever before.

Additionally and ironically enough, compounded overuse of the word lulz itself is known to cause anti-lulz.

The Anti-Joke

An Anti-Joke is a normal joke with the punchline replaced with a reasonable IRL ending. "Two guys walk into a bar... and then they enjoy their afternoon." While many anti-jokes are heavily infused with anti-lulz, whenever an anti-joke generates frunz for those who listen to it, an equal amount of lulz is generated for the one telling it. Generally, only very long anti-jokes can successfully generate a frunz/lulz pair.