(21) Ping-pong乒乓球

A: Hey, I’ve got a riddle for you!
    嘿，給你猜個謎語！
B: Let’s hear it.
    說說看。
A: What goes “Ping ping ping ping ping ping ping?”
    什麼是”乒乒乒乒乒乒乒”？
B: A man playing Ping-pong by himself!
    就是一個人自己玩乒乓球嘛！