Hardware whizzing: sometimes it's less about MacGyver skills and more about your bank account.
How did it happen? Plugging the extension cord into itself created UNLIMITED ENERGY on an infinite loop. The cord sleeving couldn't contain the raw power. #trollscience
For added effect, re-read while playing the Jaws soundtrack until the 9th panel. Then, after the 9th panel, play the soundtrack in reverse. Maybe a choir of angels for the last panel. Your call.