I'll bet he let it slide and pretended his name was "Speaking." That's what I would've done. #awkward
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
I hope a bag of chips falls off the shelf and YOU have to pick it up! That'll show you!
If his headphones are in while you're serving him, then it's both.