Derp or Rage Guy is a rage face that is known to yell and shouts loudly when provoked or if things don’t go his way, like if something he likes breaks or if he loses something. If you make him mad, make sure to know how to calm him down. When he’s provoked by trolling he’ll yell "FUUUUUUU!!" From the rage comics. He might become violent if he gets WAY TOO PISSED! He’ll curse a lot of VERY BAD things when provoked too much! The person who makes him the most angry is TrollFace