Furry is the fetish of anthropomorphic animals in sexual or adult situations. I won't go into detail, but there's an episode of CSI: Vegas in the fourth season that summarizes it pretty well. It's called "Fur and Loathing in Las Vegas".
Like most fetishes, Furry raises a lot of eyebrows. People who aren't into it or don't understand it tend to step back and go "WTF?!". As a commission artist who's done Furry pics, I get a comment from time to time about those pics asking what I was thinking. I never respond. Don't feed the trolls.
This thread, I'm guessing is making light (uh, don't quote me on that) of the lack of understanding towards Furry.
To add my two cents...
It's a fetish like any other fetish. Some people get it, some don't. Obey the Golden Rule and play nice.
Snail Shell
PS - No, Furry was not the inspiration behind my screen name.