Imagine what a really terrible day at your job would be. If you’re a bartender, maybe you served someone a drink with a fingernail in it. If you’re a bank teller, maybe you accidentally handed a customer $1,000 in cash when all they wanted was $10. If you’re a car salesman, perhaps you dented that $100,000 beauty on the corner of the dealership while bringing it around for a test drive. Cringeworthy mistakes, all, but fireable offenses?
Then again, you're probably not working in the NFL, where understandable mistakes can still cost you your job. Like, say, missing more extra points in a single game than anyone ever in the history of the NFL.