贱逼狗子你不配
[jiàn bī gŏu zi nĭ bù pèi]
The username is quite derogatory in nature. Literally speaking it refers to: You, who behaves as lowly as a dog (here 'dog' has pejorative connotation). The speaker seems to be venting dissatisfaction or hatred towards a target audience who they don't believe deserve respect or better things in life because of their actions or personality traits. It's worth pointing out this type of name tends to be vulgar and may be considered impolite. Users might use such nicknames to express extreme disapproval or contempt for someone else, or they may want to portray themselves as nonconformist in defiance.