As I mentioned, the hobbies of S4 and S5 classmates, bang tree 撞树.... Enjoy the vid.
1st victim, S5 Yan Kher aka God. According to a source, he's the first one who introduce this torturous game into the school last year. Heh, he's the 1st and the last victim of this game.
2nd victim, S4 Lun Bing. This video shows you the process when the boys are in the mood to play, they'll carry anyone out of the class and BANG!!
Note that not everyone participated in the game. They usually only take on "regular victims"to do the stunt. Only 1 casualty is reported so far....