双语笑话|四减四等于几？

4-4=?

One day, the teacher inquired^{1 Peter: How much is four minus four? Peter was tongue-tied.}

the teacher got angry and said: What a fool! You see, if I put four coins in your pocket, but there is a hole in your pocket and all of them leak out, now what is left in your pocket?

The hole, replied Peter.

四减四等于几？

一天，都是问彼德：四减四等于几？彼德哑口无言答不上来。

老师生气地说：真笨！你想，假如我放四个硬币在你的口袋里，但你的口袋里有个窟窿，结果四个硬币都漏掉了。那样，你的口袋里还有哪些？

窟窿，彼德答道。