練拍屁股

今天我生病了所以沒有好好練
但幫師傅翻譯以下
今晚他們練了拍屁股。
師傅說拍屁股的時候要大攻擊， 而先要攻擊時刻的好防手才能有大攻擊。
而這個遊戲不能忘記要真正的攻擊感。 不能只拍屁股而是要攻擊之中才行。

Tonight, I didn't practice too much since I'm sick with swine flu (I think)
Tonight, I watched everybody else practice "pai pi gu". Master said that while playing this game, you have to have big attacks. (I'm not sure what Master meant by this). To achieve big attacks, when attacking, you have to a solid defense.

Additionally, Master said that while playing this game, you have to have the intention to punch and hit the person. You can't change the game to ONLY hit the butt. It loses the intention to teach whole body defense and stepping if you do that.