Learn to speak like a lolcat (you know you want to)
Anyway, if you're not fluent in lolcat-speak but want to have some fun with other lolcat-fanciers, Speaklolcat can help. It's a web-based translator that helps turns any English phrases into lolcat language. For example:
Lolcats are in your world, planning your domination
Lolcats r in ur wurld, plannin ur dominashun
Though it's fun just to play around with, the lolcat translator is also handy tool for creating captions to put on your own cat photos. If you want to eventually move beyond the translator, you can always learn LOL-Kitteh as a second language. Kthxbai.