"Lulz dats funny!"
"Lulz teh memes r funny!"
Lulz
Laughing out loud, a word used by the Internet cultists to denote something that is funny and worth looking at. The word lulz comes from Old L33tish meaning "laughter" and used in many forums and memes.
This word has been around for a long time and it's also popular among the gamers, noobs, and other users of the internet as a way to express their waking up funny things such as memes.