Q: Why won’t the elephant use the computer?
A: He’s afraid of the mouse!
mouse [maʊs] n. 鼠标；老鼠；胆小羞怯的人
Q: Which are the stronger days of the week?
A: Saturday and Sunday. The rest are weekdays.
week [wiːk] n. 周，星期
weak [wiːk] adj. 疲软的；虚弱的；无力的；不牢固的
Q: Which runs faster, hot or cold?
A: Hot. Everyone can catch a cold.
catch有抓住的意思，catch a cold是感冒的意思
Q: How did the soldier fit his tank in his house?
A: It was a fish tank.
tank n. 坦克；水槽；池塘
fish tank 鱼缸，金鱼缸
Q: How can you tell the ocean is friendly?
A: It waves.