Students sometimes use humorous or obscure words to describe someone's appearance, but these words can be rude or uncomfortable. Here are some common expressions, but please be careful when using them to avoid hurting others unintentionally: 1. **Battle Cannon** - often used to describe someone's facial features that are not very coordinated, as if they have been "baptized by artillery fire". 2. **Dinosaur** - used to describe a girl whose appearance is not very attractive. 3. **Feng Jie** - named after the Internet celebrity "Feng Jie", often used to tease someone who is overconfident but objectively has average looks. 4. **Fresh Meat** - usually used to describe a young, handsome boy, if used ironically, it may imply teasing. Please note that these words often have derogatory connotations and may hurt other people's feelings when used. When talking, it is still important to be respectful and polite, and try to avoid using words that may offend others.