A little cruel but you have to learn. Check this out, I remember when I was a wee little one, at the young age of 9, I was plugging in a lamp. My parents were watching me as I did it. Now I didn't know what the hell I was doing, that's why my parents were there. So I have my hand grasping the plug, unknowingly that my fingers are on the prongs (yep, insert gasp and chuckle here). I hear my mother start to say something, and my dad, at the time still a marine drill instructor, hush her and say "boys gotta learn the hard way". So yep, you guessed it, I plug in the lamp, and along with the light coming to life, I get blasted and sart convulsing like I just got shot. I hear my father laughing and my mom yells at him. Needless to say, I learned, and now 25 yrs later, I get paid to make sure I don't do that (electrician) again. Thought i would share.