?别发脾气

有时候，你的朋友可能生气，以致会做出蠢事来，那么你最好这样劝告他： “别发脾气”（keep your hair on）。

?保持冷静

... pate 头顶（谑称） keep your hair on 保持冷静，别生气 a hair's breadth 以细微之差 ...

?别发性格

... make one"s hair stand on end 毛骨悚然 not turn a hair 不害怕 keep your hair on 别发性格 ...

?别发火啦

... Please don't quarrel about that.请别吵了． Keep your hair on.别发火啦 How maddening.发疯啊 ...