Not the Right Kind of Bagel Perhaps?
Before coming into the office, the OP was tasked with purchasing over 30 bagels with cream cheese and a giant dispenser of coffee for an office birthday party. And, like a good employee and team member, the OP didn’t mind going out of their way to stop at their local bakery.
They probably regretted their decision when they were called to human resources and told that they were fired. We guarantee the leeches at the workplace knew they were going to fire them but still had the OP spend their own money on birthday bagels, whatever those are!