Thanks! Here is a similar one:

來源: 2014-06-21 15:58:55 [博客] [舊帖] [給我悄悄話] 本文已被閱讀:

"Have you made someone else glad recently," asked the teacher, "such that they thanked you in the end?"

"Yes!" replied Sportwoman, "I watched the evening news last night, and in the end, the announcers said, 'Thanks for watching!'"

:D