中式英语之鉴:笑掉大牙

214. 你怎么做出那样愚蠢的事情？真是让人笑掉大牙。

[误] What a fool you are to do such a thing! That really makes people laugh off their front teeth.

[正] What a fool you are to do such a thing! That really makes people laugh off their head.

注：“笑掉头”可比“笑掉门牙”更严重，看来英国人比我们还夸张。