给跪
Gěi guì
This translates to go kneel or to kneel down.
1. When it is used on a person, it either indicates that someone is outstanding in an area that you admire him/her, or occasionally someone behaves in an extremely peculiar way that you cannot understand.
2. When it is used on an object, it implies that you are not confident of overcoming it. It is a clipped version of "给 someone/something 跪下了".
An example: (when used on a person)
他懂五国语言,真是给跪。
Tā dǒng wu guó yǔyán, zhēnshi gěi guì