person A: I had studied for an exam for several days_comma_ so I was confident when I strolled into class because I knew I would ace it
person B: and did you knock it out of the park? 
person A: Uh_comma_ I made a B on it_comma_  so it was a false sense of confidence_comma_ lol
person B: Perhaps be less cocky next time? Either way B's get degree's. 