play the goat可不是“玩山羊”，而是举止轻浮；做蠢事

【例句】
Stop playing the goat!
别再做蠢事了！

If Osterman wants to play the goat, why should you help him out?
如果奥斯特曼存心要胡闹，那你去给他帮腔干吗？