To block someone/something from your field of vision. There is a possibility that you can still hear them but it comes in the form of sounds that remind you of them.
Usually a person's nerve bone is in their left elbow or right knee.
Person 1: Aaaaah!!!
Person 2: OMG R U OK?
Person 1: Sure, I was just hit in the elbow.
Person 2: Sounds like that struck a nerve.
Person 1: Yeah, that's my nerve bone :(.