You can even be the butt of a joke.

你甚至可以成为笑话的笑柄。

But we heard Sarah-Jayne describe teenagers as being the butt of a joke – that means to be its target.

但是我们听到萨拉杰恩教授刚刚说青少年经常成为人们嘲笑的对象，也就是人们攻击的目标。

But after we heard Sarah-Jayne describe teenagers as being the butt of a joke – that means to be its target.

但是我们听到萨拉杰恩教授刚刚说青少年经常成为人们嘲笑的对象，也就是人们攻击的目标。

The " butt of a joke" or " the butt of the joke" is the person about whom a joke makes fun;it is the person who is being laughed at, and here, it usually isn't in a friendly way.

“butt of a joke” 或“the butt of the joke” 是被笑话取笑的人； 是被嘲笑的人，在这里，通常不是友好的。