有种犯贱叫闲着没事干
[yŏu zhŏng fàn jiàn jiào xián zhe méi shì gān]
'There is a kind of self-degrading called doing nothing'. This somewhat self-deprecating nickname may refer to someone engaging in worthless behavior because they are idle or bored, reflecting possible restlessness, lack of purpose, or even a sarcastic outlook on one’s own actions.