Bench clearing brawls in Korean baseball suck. Or do they rule? You be the judge.
I understand the dance move takes some dexterity and athleticism, but if you want to execute it properly you have to jump your other leg through the leg you're holding. Just grabbing your leg and hopping up and down does look that cool.
See below at the 2:51 mark for a perfect example of how the move is properly executed:
(Hat tip to JBlo)