A word you use when you're completely surprised, awestruck, dumbfounded... basically speechless.
Can be repeated as many times as needed until the truth finally sinks in.
Person 1: Dude I just kissed your girl.
Person 2: FER REAL?
Person 1: yeah man
Person 2: FER REAL, FER REAL?
Person 1: yeah
Person 2: FER REAL, FER REAL, FER REAL?