实用口语:如何说"笑掉大牙"

"真是让人笑掉大牙啊。"这是一句很简单的话，来看看你会不会犯中国式英语的错误吧。用英语应该怎么说呢？

【英文对比翻译】

Chinese Style -- That really makes people laugh off their front teeth.

American Style -- That really makes people laugh off their head.

点评：

“笑掉头”可比“笑掉门牙”更严重，看来英国人比我们还夸张。