再装逼我就报警了
[zài zhuāng bī wŏ jiù bào jĭng le]
In casual and somewhat humorous Chinese slang, this username translates to 'If you act any cooler, I’ll call the police.' It reflects impatience towards someone’s arrogance or bragging. Note that '装逼' contains crude slang and implies an attitude that is pretentious or exaggerated.