EMF(Epicly Major Fail) Detector: A warning device which detects Epicly Major Fails of magnitude 2 or greater. Can normally detect EMF's minutes to hours before the initial hit of the EMF. Used mainly to alert the surrounding area of an impending EMF so they may all witness it.
*SIREN*
Person 1: "Ohh dude that's the EMF Detector!".
Person 2: "Well lets go see who screwed the pooch this time, then we can laugh and ridicule them all day!"
Person 1: "Yeah lets go!"