Welche Bedeutung steckt hinter der hier vorgestellten Vokabel aus dem Bereich Chatting to colleagues?

'Did you apologize to your boss and get your job back?' 'Yes, thank goodness. I really had to eat humble pie, though.'

to eat humble pie

Do you know what it means?

• to promise to behave well in the future
• to make a serious apology and accept shame
• to do a lot of unpleasant tasks in order to be forgiven