Sticking ur hand into the wires of a lightswitch

[TheDealer]

Ok if u were to unscrew the cover that goes over a lightswitch and stick ur fingers in (very deep) what would u feel? The lightswitch is in working order but not on if it matters. I did this a long time ago when I was a kid but cant remember what kind of shock I felt. I remember that I felt a shock but i dont remember how painful it was. Im very interested, and am thinking of doing it again depending on the results.