flak·y also flak·ey (flā'kē) adj.
flak·i·er, flak·i·est
Made of or resembling flakes.
Forming or tending to form flakes or thin, crisp fragments: flaky pastry.
Slang Somewhat eccentric; odd: "that slightly flakey quality, in joy as well as in grief, that prepares us subtly for the mad scenes to come"(Village Voice).