3. La-la land  想法不切实际（说某人住在la-la land的意思是此人生活在空想国，想法不现实不切实际）

eg. My boyfriend's living in la-la land if he thinks I'm going sailing with him-I get seasick！

4. Brass neck  厚脸皮（用来形容一个对自己所作所为过于自信，而且不顾及他人想法的厚脸皮的人）

eg. ①The customer has a  brass neck asking for a refund when it was obvious he had already worn the shoes.

②She's got a brass neck telling the boss that he wasn't very good at his job——I would never say that！