This Athlete Is a Master of Butt Skipping
Butt skipping is like jump rope, except that you do it with your butt. Instead of leaping over a rope at just the right moment, you clench your buttocks together and propel yourself off the ground just long enough for th...
https://www.neatorama.com/2014/12/31/This-Athlete-Is-a-Master-of-Butt-Skipping/