No, it's not a teenage insult, a disabled person or a character from Pulp Fiction that I'd really rather not talk about, it's the GNU Image Manipulation Project; an image editor on par (well, almost) with Photoshop but completely free and open source.
It comes in pretty handy. For instance, I'd been looking for an image to replace the default one that came w/ this blog template--well, actually, I have a good idea for creating my own, but that'll have to wait until I borrow someone's digital camera--and I saw "Tuned In" @ 28mm.org. After checking w/ the photographer to get his permission, I replaced the old image with it. But, it didn't really look right, so, I ran it through one of the GIMP's filters to create the fuzzy border, and now it looks pretty darn good, if I do say so myself.