Some guys are just impervious to electric shock and it's no big deal. I got something better. When I was about a year old, I stuck a two-pronged hairpin in an electric socket. I did it consecutively three times before I concluded I didn't like it. Hehee. ;) My mom many decades later was surprised I remembered doing it, and said that my fingers got burned.
My dad used to kill the lawnmower by grabbing the sparkplug.