멘붕

That moment when your brain completely short-circuits — overwhelmed, confused, or shocked beyond processing. From 멘탈 (mental) + 붕괴 (collapse). Not always serious; often used casually when something is just too much to handle.

멘 = mental (shortened from '멘'탈, Korean pronunciation of "mental")

붕 = collapse (shortened from '붕'괴)

See also: 유리멘탈, 강철멘탈, 쿠크다스멘탈, 두부멘탈