At about the age of nine, I stuck my thumb in a light socket just to see what would happen. Therefore, from personal experience. I can solemnly attest and confirm that Brock is telling the truth.
IT B****Y HURTs !!!
(And here in the U.K. we have 250 Volts.)
(Well actually only about 242 by the time it gets to the little village where I live now.)
Did this experience really change my life ? I became an electrician, and have had a good few belters since then.
Please take our word for it, ...
DON'T TRY THIS AT HOME !