Just recently shocked myself on an electric socket. Unintentionally. I was routinely unplugging an external drive and I suppose I must've touched the metal part of the plug before it was out of the socket. Ouch. Won't be doing that again.
Since then I've noticed I'm a bit more careful than usual when unplugging (or inplugging) electrical devices... must be some kind of side-effect. Read about other people getting headaches and nausea and dizziness and all kinds of unpleasant aftereffects, all I got was a tingling sensation in a finger that lasted a few minutes. Lucky.