It's an old NY restaurant saying, 86th St was an alley and for the restaurants located there that's where the garbage went. So "86 it" means throw it out. When I was in the Air Force we used that term all the time.
On one of Kevin's posts he talked about getting Mobil restrooms signs but the frame that held them together was missing and questioned could he make them. I think that post is in the value thread. He posted how he hung them which I think turned out nice. I think his post is on the buys of the week thread.