别 / 以为 / 我 / 不知道 / 你 / 在 / 玩嘢 / 小心 / 我 / 告诉 / 老师

别以为我不知道你在玩嘢，小心我告诉老师。

Don't think I don't know you're up to your tricks; be careful or I'll tell the teacher.