请先听一遍，再看原文；尽量模仿原声大声复述，最后做口语练习。
1. Use your loaf, son. Don’t ride your bike on the motorway at night without lights. You’ll get yourself killed.
2. Well, in English, if you are slightly annoyed with someone because they are doing something they haven’t thought about properly, you can say ‘use your loaf’.
3. Oh I see. Loaf here is slang for head.
译文：
1. 动动脑，儿子。不要在马路上骑没有车灯的自行车，你会没命的。
2. 嗯，英文中，如果你对某人有点烦，因为他们做一些没有经过好好思考的事，你可以说 ‘use your loaf’。
3. 哦，我明白了，Loaf 这里是 ‘头脑’的口语惯用法。
loaf = 一条面包
use one’s loaf = use one’s common sense (非正式) 动动脑子
口语练习：
Oh why were you playing football in your school trousers?! Use your loaf! You have holes in your knees again!
