I just read the post about Hamlet, and thought I would add a mock of my own that was very similar.
My senior year of high school, I was in an advanced placement history class for college credit (this is relevant). There were only about 8-10 of us in there because it was advanced.
One day, we're in class discussing current events, and my teacher produces an article about rebels in the Congo that were forcing local Pygmy tribes to bring back food for them; if enough food wasn't brought back, the rebels would eat the Pygmies (IIRC there was a food shortage).
This is basically the conversation that followed (it's been a few years, so I don't know it word by word anymore):
Her: What's the big deal??
Teacher: What do you mean?... they're eating Pygmies! *baffled*
Her: Who cares if they eat baby pigs. I mean, they're pigs. You're supposed to eat them.
-Now you know in TV/movies when something happens in class and everyone in the room turns around and stares with their jaws on the floor? That's what happened next.
This was the same girl that a week or so later had this conversation with another girl in class (the bad grammar is deliberate).
Her: Oh my god, I saw a Amish in Wal-Mart yesterday! It was SO cool!
Other her: What's a Amish? *blank stare*
Her: You know... those people with the dot's on their foreheads.