Teacher: Kevin, why are you late this time?
Kevin: Please sir, I bruised two fingers knocking in a nail at home.
Teacher: I don''t see any bandages.
Kevin: Oh, they weren''t my fingers! I told my little sister to hold the nail.
我妹妹的手指头
老师:凯温,这次你怎么又迟到了?
凯温:对不起,老师,我在家钉钉子,砸坏了两个手指头。
老师:怎么没有扎绷带呀?
凯温:噢,砸的不是我的手指头,我叫小妹妹扶着钉子的。