What is the biggest shame in your life experience?

I think the biggest shame in my life should be being framed by others. At school, for some reasons, once I stayed alone in the dormitory, and a classmate lost money. At that time, I could say that I was alone in the dormitory, so he lost his money, so he pointed all the evidence at me, so that was the biggest shame in my life, because I couldn't take other people's money. I didn't take this as what I should do, so in my life experience, being framed this time will never be erased, and I will feel untrustworthy and particularly uncomfortable.