Lyric discussion by mrs.sideik 

Cover art for Melancholy Mechanics lyrics by Red Hot Chili Peppers

The sad workings or mechanisms of his mind. Is what I get from "these are the Melancholgy Mechanics of my mind."

When he says "it's raining in my cranium." I guess it's all the bad drugs and shit fucking up his mind. And when he says "my head feels like a stadium," I guess its all the problems and shit he's going through that are starting to weigh heavily on him. And yeah the line is incorrect. it is "Psycho-exist point of collision".