A special flavor of manly angst, emanating primarily from guys preoccupied with being "real men" (i.e., tough, strong, brooding, some flavor of
urban warrior). Primarily caused when the guy feels his masculinity assailed, be it from someone keying his Hummer, a physical imperfection like premature balding, or being confronted by someone who breaks traditional
gender roles.
Another variant of mangst is the old brooding, angst-ridden artist bit. What perhaps began as a James Dean
impression to score arty chicks imperceptibly morphed into full blown, chronic mangst.