A professor at Harvard recently lost it - not his lunch - when a restaurant overcharged $4.

Ben Edleman, an associate professor at Harvard Business School, slammed a Chinese restaurant that accidentally overcharged him $4 for a meal ordered online. It was later found out that the prices listed online, were out of date. During an exchange with the restaurant owner's son, Edleman asked he be refunded three times the amount of the overcharge and then threatened legal action. All throughout, the son maintained his cool although near the end of the email exchange he did write "I apologize for the confusion, you seem like a smart man. But is this really worth your time?"

Good question. The restaurant admitted the mistake and apologized. At what point do you think this went too far? What would you have done?

Click here to check out an interview with the professor and some responses to his actions on Twitter.