I quickly responded with "Siri, I'm not talking to you". A couple minutes later the teacher said "I thought I heard a phone" and she looked a bit annoyed. I was astounded! I tried to keep my cool.
To my surprise, Siri had been listening to the lecture and was attempting to help me in class. It was unwanted help but also entertaining. I don't think Siri can tell the difference between talking to me and responding to other voices she hears in class. This experience was an eye opener for me and my friends. Even though Siri makes silly mistakes, I still love her!!