Age range: 1 through 8
  1. Running in between lines of people
  2. Knocking backpacks over
  3. Randomly expelling a loud shout
  4. Keeping a laser-focus on a handheld device
  5. Saying "I'm bored" to their parent; sighing loudly for emphasis
  6. Demanding knee-bounces from their parent
  7. Falling asleep
  8. Long-form staring at strangers (an early form of people watching)