English Original
Professor Tom was to meet his students the next day, so he wrote on the blackboard: "Professor Tom will meet the class tomorrow."
A student, seeing a chance to show his humor, walked up and erased the "c" in "class." Noticing the laughter, the professor turned around, walked back, and looked at the student and then at the altered notice. He calmly walked up, erased the "l" in "lass," glanced at the flabbergasted student, and went on his way.
中文翻译
汤姆教授第二天要见他的学生，于是在黑板上写道：“汤姆教授明天将见全班（class）。”
一名学生看到这个通知，觉得是展示幽默感的机会，便走上前擦掉了“class”中的字母“c”，使其变成了“lass”（姑娘）。教授听到笑声，转过身走回来，看了看学生，又看了看被修改的通知。他平静地走上前，擦掉了“lass”中的字母“l”，使其变成了“ass”（蠢驴），瞥了一眼目瞪口呆的学生，然后继续走他的路。