Malfunction

A malfunction is a state in which something functions incorrectly or is obstructed from functioning at all.

Some types of malfunctions are:
 * Malfunction (parachuting), malfunction of a parachute
 * Sexual malfunction, also called "sexual dysfunction"
 * See also dyspareunia
 * Wardrobe malfunction, a euphemism, or slang term, for accidental nudity in public
 * Malfunction Junction, an ill-functioning interchange
 * Firearm malfunction, the failure of a firearm to function as expected