It has recently come to my attention that there are at least two disparate universes which the Internet spans, with some kind of gateway that connects them and translates messages as they come across it.
I came to this conclusion not, as you might expect, by reading political debates, but by a simpler means. Apparently, in this other universe, xkcd isn't funny. There was no other explanation for the comments I sometimes saw from people talking about how unfunny it was; they must perforce be reading a different xkcd than I was.
At first, I felt very sorry for those people, stuck in a world where xkcd wasn't funny. Just think of all they were missing out on, and didn't even know it! But then it occurred to me that it might work both ways. Maybe in their universe lolcats are funny. It would explain so much. (In my universe, they're just pictures of cats with misspellings over them.) So maybe I'm the one who's missing out on an entire universe of sublime humor!