你装模作样像条狗给谁看
[nĭ zhuāng mó zuò yàng xiàng tiáo gŏu jĭ shéi kàn]
This nickname implies someone who behaves in an exaggerated or artificial way to impress others, often in an attempt to be admired but might be seen as insincere. The metaphor of a dog is to highlight the pretentiousness.