Oh, man, this is one of those things that you knew was coming some day, but you're never prepared. Seeing some of the clips from the concert, it just seemed to me like he knew and was just telling everyone goodbye the best way he knew how.
And there will be people who say, "no, too soon!", but if you told me back in the '80s that he would live to 76, I would have said "no chance."
RIP, to a crazy character who, when I first started hearing about him in junior high seemed to have the reputation of another Charles Manson, but was able to position himself later in life as everyone's bat**** insane, but lovable, grandpa or crazy uncle.