A: Be careful how you peel those potatoes!
B: What's so hard about peeling potatoes?
A: You're holding the knife wrong.
B: What do you mean?
A: When you pull the knife towards you, it's easy to cut yourself.
B: How should I peel them, then?
A: Face the blade away from you.
B: This feels a lot easier!
A: It's harder to cut yourself.
B: Could I have gotten very hurt?
A: Well, it would have hurt quite a bit.
B: I won't be so careless next time.