Dam I just got a good jolt!!! Dam I hate that ZAAPPPPPPPPPP!! I was reaching back to adjust the brightness on the fly from the wrong side, my arm touched the back of the neck board and ZAPPPPPPPPPPPPP!!!
When I was adjusting the colors on my TRON about a week ago, I was under the monitor, praying to Bruce Boxleitner directly, that he would have mercy on my electricity-terrified soul.
You have the post traumatic zap syndrome. It is when the zap traverses the whole arm causing the muscles to contract suddenly. They are not used to that sort of exertion, ..... except when reaching for a cold frosty beer mug.
Relax, to paraphrase Nietzsche "That which did not kill you, will make a great drinking story, later".