没礼貌的破小孩
[méi lĭ mào de pò xiăo hái]
The user might refer to themselves as an 'impolite troublemaker kid'. A playful or somewhat negative connotation expressing rebellious or mischievous characteristics, particularly when seen as not adhering to polite social conduct standards. However, using these words to name yourself may involve some sense of humour or irony.