If your eyebrow starts twitching, your face will begin to go numb and start deforming. You need to consult a doctor for it may be only a short time before it starts to deform. It's also very contagious.
Friend: "Dude what happened to your face?"
Me: "My eyebrow's been twitching"
Friend: "Get away from me! I don't want it. You've probably got that new disease called the eyebrow twitching"