["I couldn't believe that I received an A on my final that I didn't even study for", "That's great!  Congrats.  Which class?", "MIcrobiology. I thought I failed the final for sure. Maybe the professor curved it, or maybe I'm just insanely lucky."]
Or you really know it!  I was never great at science, sad to say!
I received an A on my final that I didn't even study for!!