Dreadlocks congo bongo, I

My co-worker just called me outside to take a gander at one of our city denizens sitting on the wall outside. I saw it. As we returned to our desks he asked me, truly puzzled, if what we had just seen was very dirty and tangled dreadlocks or if there was a hat involved in the hair style as well. I told him it was strictly dreadlocks, no hat. "But they are nasty dreadlocks, not natty dreadlocks," I said.