Today is the day to curse the gods.
Book By Its Cover Review: Getting Covered in Crap Released from a Rock Star's Tour Bus
Well, this is an easy one. I can tell you, without having experienced it, that it sucks. Real bad.
But it depends on who is doing it, wouldn't you think? Let's say that, in fact, the crap you are covered in belongs to the Dave Matthews Band. There has to be a certain amount of righteous indignation in that, since a crunchy, earthy band such as that surely would suffer some humiliation from such a non-earth, non-people friendly act. I can imagine having some satisfaction in that, (after I washed myself off, of course, and received my settlement money), if it was a band that I found overly hippie-ish and annoying.
On the other hand, what if it's a performer that you really adore? What if it was Bruce Springsteen's van? Would you feel rather honored? Tell people that you got shat on by the Boss? Would you save the shirt you were wearing? That's pretty gross, man. (But I bet you could sell it on Ebay).
Lastly, though, say somebody scary craps on you, say, a musician on Death Row records. Obviously, you're going to be disgruntled, but if you complain, it's possible you might get shot, or stabbed, or dangled out a window by Suge Knight for your big mouth.
These are things to think about before one goes judging what it would be like to be crapped on by a rock star's tour bus.