This one is pretty tame. I feel like we have all been tempted to write ridiculous test data -- "Dear Valued Customer, we regret to inform you that the HBO Max Defraculator has been compromised and your credit card details have been sold to a self-aware purchasing bot. We are sorry and wish you the best." Sending that to your customers is a minor disaster. Sending "This template is to be used by integration tests only." will be ignored by everyone who isn't a software engineer.
