What are you guys doing?

Last friday, after lunch, I was walking up the staircase at my school and saw some of the 5th grade girls climbing all over each other. It was one of the strangest and funniest lunchtime activities I think I'd seen, to date. Stella told me it's a popular Korean game... The girls put their heads between another girl's legs, and then someone jumps on their backs! If I didn't have pictures to go with this, you'd think I was describing an adult film!!

I have no idea what the purpose is of this game, but if I have to lean over and put my head between someone elses legs and then have everyone fall on top of me to play it , I don't think I'm interested!!!