嘿对面那傻蛋喂你在说笨蛋
[hēi duì miàn nèi shă dàn wèi nĭ zài shuō bèn dàn]
'嘿对面那傻蛋喂你在说笨蛋' translates to a casual call out with insult, saying like, 'Hey, fool opposite me, you called? And you’re talking about idiot.' A colloquial or informal usage, this username likely intends to convey rudeness and playful teasing.