Gross. I don't mind gross. I wish it were in focus, though. You could even crop in more so we could get a better look at it, as long as we still know it's a hat. If you shot this close up, see if the macro feature on your camera works better at getting this in focus.
Nasty! I guess it was a good thing you were wearing a hat! Focus - hard to say, nothing seems totally sharp. Lighting - also a little questionable, the bird guano is a bit blown and the hat hard to distinguish (no suggestions, white on black is hard to do well). 5 Swash
LOL. Good job the hat was on, I guess. Soory about the photo though - got to mark it down on focus, lighting, composition, and it took me a while to figure out what was going on at all.
*lol*...one of few photos that actually made me break a smile (quite an achievement if you ask me.) Nice idea, the only improvements I would personally make is to remove some of the slight distractions in the background, especially in the upper left corner.