If you know how to step and a stepping song comes on (happy people) one must drop everything he is doing no matter where you are or who youre with, grab a breezy (must be a stranger), and do the step.
Some put them on both sides, some on only one. Some have five lines, some have 2. Some are straight, some have edges in them.
It probably really sucks when after they realize how ridiculous they look and decide to grow them out and they have all these little hairs that stick out on the sides of their head.