Class and Ass

Professor Laurie of Glasgow put this notice on his door：Professor Laurie will not meet his classes today．

A student，after reading the notice，rubbed out thec．

Later Professor Laurie came along，and entering into the spirit of the joke，rubbed out thel．

格拉斯哥的劳里教授在门上贴了这样一个通知：劳里教授今天不会他的班。

一个学生读了通知后，擦掉了字母c。

后来劳里教授来了，也想开开玩笑，他擦掉了字母l。