I was on the train talking to a friend about the day I had volunteering in a prison. I was a criminology student at the time working toward a master's degree. A man sitting across from me piped up and started to explain my own degree to me. He was all kinds of wrong and I just turned to him and said, "I'm curious as to when you were invited into this discussion?"
Shut him up real quick.
Shut him up real quick.