My brother told me about a problem they had with one sports store being broke into around the same time every week. They would get the call and by the time they got there only a few things would be missing with no trace of how someone had gotten in. After this happening a second time they staked out the store front and back waited. It turned out a crackhead that lived down the street would cover himself in crisco and slide in thru the air vent on top of the building. He would grab something small to sell or pawn and slither back out and would be gone before anyone got there. The funny part came when they tried to catch him. They let him climb up the building slither in n out and covered the ends of the alley and had to chase him down. It was like trying to catch a greased pig. No one could get a grip on him. My brother said everyone including the crackhead were rolling with laughter. He said "We had such a good laugh, we almost let him go."