A: Can I borrow your class notes?
B: Sure, but didn't you take any down?
A: I couldn't really see the board.
B: Do you sit too far away?
A: I think I just need new glasses.
B: You should be careful. It could be serious.
A: What do you mean?
B: You could have a concussion.
A: Or worms could be eating my eyes.
B: Maybe you're a robot and your batteries are dying!
A: I'm pretty sure I just need new glasses.
B: Even so, you should probably buy some batteries.