An absent-minded professor was lecturing on anatomy（解剖学）.

"To show you more clearly what I mean, I have here a parcel（包裹） with a dissected frog. I want you to examine it very carefully."

The professor unwrapped the parcel and saw that it contained two sandwiches and a hard-boiled egg. Astonished, the professor said, "I was sure I had eaten my lunch, but where is the frog?"

更多英语笑话

谁最懒

都是为了钱

我都知道了