When you move into a new apartment in NYC the landlord must paint your apartment before you move in.
The first apartment I moved into was freshly painted, but it had not been cleaned before the fresh coat of paint went up. The woman who lived there prior must have had long curly black hair, because a good deal of her hair was painted into all the walls. You could literally grab a small part of the hairy paint, and pull the strands off the wall one by one.
It was disgusting.