A: Remember to put air in your tires.
B: How often do I have to do that?
A: Once every two months.
B: That’s a lot.
A: What do you mean?
B: That’s six times a year!
A: Yes, and it takes about five minutes each time.
B: I’ll try.
A: Check your tires or you’ll get a flat.
B: Oh. That’s not good.
A: No, it isn’t. A flat costs you time and money.
B: And I don’t have either.