1. Dance in which the wearer pulls the front of his or her pants, while wearing the said pants, with both their thumbs and gently pulls on the pants in a rhythmic motion, swaying their hands and pelvis side-to-side. Using the thumbs to force oneself to leap forward with each sway is also acceptable, but may cause minor amounts of property damage, minor injury to oneself or others, and enormous amounts of humiliation.
2. The move one does in a seated position while trying to scratch the itch caused by pubic hairs latched to the penis as it retracts back into one's body.
1. "Dude, me and this hot chick met on the dance floor and we started to Pants Dance, but then she stumbled and hit an old lady."
2. "Sir, I will not allow you to Pants Dance while I am giving a lecture!"