謎底：
沒穿鞋的是貓兒子，拿棍子的是兒子，他用棍子假鳥玩具讓貓咪轉著圈跑（鍛煉身體）。
另外一個從網上抄的笑話：
A couple had two sons. One was named Mind Your Own Business and the other was named Trouble.
One day the two boys decided to play hide and seek. Trouble hid while Mind Your Own Business counted to one hundred. Mind Your Own Business began looking for his brother behind garbage cans and bushes.
Then he started looking in and under cars until a police man approached him and asked: “What are you doing?”
“Playing a game,” the boy replied.
“What is your name?” the officer questioned.
“Mind Your Own Business.”
Furious the policeman inquired: “Are you looking for trouble?!”
The boy replied: “Why, yes.”
然後 。。。 
。。。
