#Slenderman #Jeff The Killer #Creepypasta #Fall Out Boy (Band) #Light 'Em Up #My Songs Know What You Did In The Dark #Music Video #Song (Composition Type) #My Songs Know What You Did In The Dark (Light Em Up) #The Band (Musical Group) #Musical Ensemble (Musical Performance Role) #Fan Video #P4perCake #Video Clip (Website Category) #Music (Industry) #Halloween (Holiday) #Jeff The Killer VS Slenderman