IME it's the "completely brilliant" code that your future self will hate you for, and needs the most comments.
Moreover, when the weight of those comments trends towards 50% being justifications for why you did it that way, it's an excellent sign that your code has gone from "brilliant" to "super-genius", as in "Wile E. Coyote, Super-Genius".
"Completely dumb" code can be read by your future self without comments. Even, sometimes, by other people!