Jill: Mark, wait! None of you is using the phone until we work out a system of phone usage for you boys.
Tim: All right, listen up.
Jill: OK, it's very simple. Each of you will be allotted 45 minutes a day of phone time. You can't use it continuously unless nobody else is waiting. Of course, none of these rules apply during off-peak times, which would be 9:00 to 5:00 on weekdays, all day on the weekend, and any time your father and I are home. Also, keep in mind, if you fail to use your daily allotment, you can't apply that to future phone usage. Does that sound fair, Tim?
Tim: I lost you after "it's all very simple."