Outside and Inside

〔英語笑話〕——  Teacher：Arthur, if you had three apples and ate one ,

                How many would you have ?

                Arthur：Three.

                Teacher：Three ?

                Arthur：Yes. Two outside and one inside.
                               

裡外都算

〔意譯成詩〕——  三蘋果吃了一個，還有多少個蘋果？

                答案三個問為何？外面兩個肚有個。