不服啊有本事咬我啊你说的我朝嘴唇咬了
[bù fú a yŏu bĕn shì yăo wŏ a nĭ shuō de wŏ cháo zuĭ chún yăo le]
This internet name expresses a playful or provocative defiance, something akin to taunting in a light-hearted manner - "if you really want to start something, just bite me", followed by an implication of a challenge.