There is this new "Special" person in our apartment building. What I mean by special is "not all there", "crazy", "f'ed in the head". He is a nice guy, but has problems. He constantly says "hey buddie" to everyone outside the building. Going and coming home he is outside, saying "Hey budie". Now he started asking me and the wife for money. "Got any change?". Also he is trying to sell us VHS tapes. He rings our doorbell now and is always trying to get inside. My wife answered the door and told him he couldn't come up. He doesn't understand though and is just really agressive and constantly badgers and he just ended up following her up the stairs. I brought him for coffee one time, up the street(this was earlier in the day). So now when he is over he is bothering me for 20 minutes telling me he will give me VHS tapes if I bring him to get another coffee. Finally got him to leave but this guy is crazy and I know he will be knocking on my door today. If I piss him off I don't know what he would do. He already admitted to being in and out of Metal Health facilitys(loony bins). He had some scars on his fist and when asked he told us he got mad when he was locked up in the facility and put his fist through the wall!!!!...I'm sure I could defend myself against this guy, but really don't want to end up in court over something like this, especially when the guy lives in my building.