Would a stun gun even effect a snake? Are there scales capabable of conductivity? Human fingernails are bad conducters, so would snake scales also be pretty bad at it? Poor comparison, but not much else to go on, as far as humans to snakes. I hear the stories of snakes in computers, and junk like that, but how many are true? and who is to say the snake wasnt just wet, water or other. I knew a few guys that worked for the Eletric company, and they were always finding snakes around the stuff, for heat reasons, but they never mentioned a deep fried one.
Also, if your going to test the stun gun theory on something, and I will get heat for this, but test it a stupid Ball Python. See have fast it curls up after a few shocks, that would be interesting, and film it, so everyone else who hates Ball Python can watch it. Yes, I am sure your(as in everybody) Ball Python is great and the exemption of the rule, but I have yet to see a Ball Python with half a brain.