Class and Ass
班和笨驴
Professor Laurie of Glasgow put his notice on his door: "Professor Laurie will not meet his classes today."
格拉斯哥的劳里教授在门上贴了这样一个通知：“劳里教授今天的课程取消。”
A student, after reading the notice, rubbed out the "c".
一个学生读了通知后，擦掉了字母“c”（lass：姑娘）。
Later Professor Laurie came along, and entering into the spirit of the joke, rubbed out the "I".
后来劳里教授来了，也想开开玩笑，他擦掉了字母“I”（ass：笨驴）。
