For this you need one child who is the quiet, studious type, and one who is the loud, sadistic type. The first child is required to either attempt to read a book, or simply go to sleep. The second child's challenge is then to attempt a family sing along. The first child will attempt to silence the second by asking the parents to shut them up. The second child will continue to sing, at a lower volume. The first child will then repeat the process, and the second child will sing a little quieter, somehow becoming more annoying. The second child will have won when they don't need to sing to distract the first, they will be so busy listening for that mice-on-comb-and-paper voice that any hopes of sleep or reading are banished.