Above is what I started my day with: one handful of dirt, tar, paper and god knows what else from a customers computer. This is only one clump out of about 4 or 5 though. Seriously, how can people use or be near computers in that sort of shape? And if this is in a house, I shudder to think of the state of it.
Edit: I was sick for the next week after this. Ick.