A: Tiger is the greatest golfer in the world.
B: You can say that again.
A: But I'm worried about Tiger.
B: Why is that?
A: Because he likes to SCUBA dive.
B: What's wrong with that?
A: It can be dangerous.
B: You mean he could drown.
A: He shouldn't SCUBA dive until he retires.
B: But he dives to relax.
A: He might relax, but it makes me nervous.
B: If his wife doesn't mind, you shouldn't mind.