The point at which a person nearing or during retirement begins to act "young" again so as not to descend into despair and madness as they slowly rot and die.
Guy 1: "So my dad replaced the really awesome glasses with these fugly
ass grandpa ones and I'm just like, 'WOW YOU ARE SO OLD!'"
Guy 2: "Haha is it midlife crisis status?"
Guy 1: "Nah he's too old for that. That was when he bought the convertible."
Guy 2: "Oh it's an end-of-life crisis."