Lifting a small animal or child into the air and singing the circle of life, preferably with some sort of light shining on you, like rafiki does to simba at the start of the lion king.

When you eat dirt for the first time and leave your family to build a shack in the woods

When you’re fucking a girl and she begins to bleed from her vagina, you mix your cum in a cup with her blood, and proceed to dip your fingers in the cup. Begin to draw two lines on her forehead, one on each cheek, and another two on her chin, thus completing the action of Lion Kinging

Putting any transferable pigment (e.g. eye shadow, slow drying ink, or face paint) on your thumb then drawing a line across a victims forehead whilst shouting "Simba".

The act of holding up your dog 6 feet in the air while singing “Circle of Life.”

When you hold your phone up in the air looking for a signal

When you nuzzle into someone, (generally into their neck) in a cute and slightly atavistic fashion, much like employed by Simba and Nala in the popular Disney film, "The Lion King"