What is this game about?

What is the neck game? this morning at the beginning of the annocements our ass. principle came on and ব্যক্ত anyone caught playing the neck game will be put in in-school. wat is the neck game?! i want to know just so i wont lightly মুষ্ট্যাঘাত some1 on the shoulder and then get an in-school. plz respond if you!