Meaning:
“吃相” literally refers to “the way a person eats,” or “table manners,” and “难看” means “unsightly.” Literally, this term means “bad table manners,” but Chinese netizens has long used it as a metaphor to describe a person or a company who acts ungraciously or indecently to maximize their own interest. For example, a person will be accused of “having bad table manners” if he fights for a seat on the Metro train with an elderly person. The saying reportedly came from Shanghai dialect.
Example:
A: 每次用这个搜索引擎，排名靠前的全是广告。
Měicì yòng zhège sōusuǒ yǐnqíng，páimíng kàoqián de quánshì guǎnggào。
Each time I use this search engine, the first things that pop out are advertisements.
B: 这个公司是出了名的吃相难看，我早就不用他们的搜索引擎了。
Zhège gōngsī shì chūlemíng de chīxiàng nánkàn，wǒ zǎojiù bú yòng tāmen de sōusuǒ yǐnqíng le。
This company is notoriously indecent in doing business, and I’ve long quitted using their services.