How to \'implements\' a joke during a presentation

How to "implements" a joke during a presentation 

文/剿匪出关

"implements" 是Java的一个关键词。我写习惯了，以至于在昨天讲座的slides中，出现了"to implements"的语法错误，而Latex的Beamer并不能查语法错误。

当时有点尴尬。但我马上笑道：“Please execuse my English. In my first semester of teaching, I gave students extra credit for pointing out grammar erros in my slides. In the second semeter, I cannot do it anymore. The students asked why? I said I cannot just let everybody get A。”

哄堂大笑！