When the lolcat thing first started up, I didn't get them. At all.
Then the bombardment commenced. They were everywhere.
Suddenly something clicked. (Possibly a brain cell giving its all and then taking one for the team.) And then I thought they were hilarious.
In fact it was the same thing for me with the comic Zippy the Pinhead. For years I read it with the rest of the funnies, mystified at who found this funny. Then one day, something clicked and I got it. Same thing with lolcats.
But as I just pointed out to RW, I now start imagining meatspace cats to have captions in their heads. Hell, I see bold white outlined letters in the Impact font superimposed on Cleo-Kitty all the time.
FOR THE LOVE OF GOD, I AM BRAIN DAMAGED BECAUSE OF LOLCATS.