矫情做作你麻痹卖萌扮淑尼玛比
[jiăo qíng zuò zuò nĭ má bì mài méng bàn shū ní mă bĭ]
This is a rather crude and provocative username. It implies sarcasm, mocking overly dramatic behavior or someone who pretends to be innocent and cute. The tone is very informal and aggressive.