While on wait.

You and your friend who just got back to town for a summer or spring break decided to meet up in a mall for a catch up session, but now he/she is running late or your flight has been delayed or in any such situation, instead of just sitting there and gazing around looking like a loner, you can plug in your earphones, turn on your jam and bob your head to the beat while you wait. Now you have something to keep you occupied and save you from boredom.