你那朋友我很讨厌哪个狗日惹我媳妇
[nĭ nèi péng yŏu wŏ hĕn tăo yàn nă gè gŏu rì rĕ wŏ xí fù]
This username translates roughly to 'Your friend whom I hate very much, the son of a bitch who annoyed my wife.' This conveys strong negative feelings and indicates that someone is very angry or upset with a friend for causing trouble.