You sort of attack somebody and they're laughing but if it's--but if somebody's trying to mug you you're not "Ah, this is so funny."

你假装打对方，对方会觉得很好笑,但如果有人抢劫你时,你不会觉得好笑“

耶鲁公开课 - 心理学导论课程节选

But, the thing, it becomes less and less funny and not at all.

但这件事情,渐渐不那么好笑,最后沦为空谈

耶鲁公开课 - 1871年后的法国课程节选