My final rotation in medical school was radiology. And you can probably guess the reason why.
Anyway, the site I was at had a large number of us...all 4th years who had matched and were counting down the days until graduation. So we had these weekly lectures with cool images.
One abdominal film goes up. The attending asks us what we see. I promptly say "Bezoar."All of the other students are staring at me with a WTF look.
"That's right! How did you know?"
I didn't want to admit I knew it from reading Harry Potter...