不美不萌不温柔不帅不乖不体贴
[bù mĕi bù méng bù wēn róu bù shuài bù guāi bù tĭ tiē]
This is quite self-deprecating – it lists off negative qualities such as: Not attractive, not cute, not kind, not handsome, poorly behaved, and inconsiderate. The person likely wants to project an image that they are unconventional or have a sense of humor about their perceived flaws.