An intoxicated person whose head has apparently become attracted to metal objects. Characteristics of a magnet head include stumbling into and/or leaning towards roller shutters, parked cars, lampposts or any other metal objects within a five to ten foot radius, usually leading with the head or face. Magnet heads are most commonly found alone, roaming the streets late at night having been abandoned by friends or ejected from a party.
Oh my God, we gotta get this magnet head out of here, he's gonna face plant into our fridge.
Keep an eye on this magnet head in front of us lads, there's a load of parked cars coming up!
Holy crap, that magnet head just fell down onto those train tracks!