This isn't so much something I learned from Wikipedia, in that this time around I learned a variation on Wiki's usefulness; namely, proving to someone that you are not playing a joke on them.
My boyfriend and I were watching the latest episode of Family Guy this afternoon, which was apparently way more important than reading a book or going to the gym or volunteering at the Humane Society. Anywho, there was a joke about eye floaters, and I laughed (kind of), while my boyfriend just looked confused. And I said, "You know, the floaty things in your eye?" Well, apparently he is some kind of mutie with perfect eyes, because he doesn't have them. After a few turns on the Wheel of Disbelief-- "Are you just going along with the joke to fuck with me?" "Are you just pretending that you don't have them to fuck with me?"-- I turned to the Wik' to prove to him that they exist, and to prove to myself that I'm not embroiled in some twisted, ocular folie a deux with Seth MacFarlane.
And they do exist! Hurrah! And are apparently caused by crap in the vitreous humor (aka gel that fills your eyes). Ewww.
I don't know, is this some rare thing that only afflicts myself, at least one member of the Family Guy writing staff, and possibly a third person who wrote the Wikipedia article and is presumably not the latter person I mentioned (because I certainly didn't write it)? Who else out there on the Internet has weird floaty things in their eyes?
ETA: Andy Goth sent me a link to this essay about floaters. Floaters, and HP Lovecraft. Check it out.