A: Are you taking karate classes?
B: Yes, I just started last week.
A: That's so cool!
B: It's a lot of hard work!
A: Are you training to be like Bruce Lee?
B: No, I'm just learning some self-defense.
A: Oh, you mean like blocking hits and stuff?
B: Yes. I want to be able to defend myself.
A: That's pretty impressive.
B: I've learned a few skills already.
A: Remind me never to mess with you!
B: Don't worry; I'd only use my skills when necessary.