烟酒不离手脏话不离口
[yān jiŭ bù lí shŏu zàng huà bù lí kŏu]
This username depicts someone who has a habit of smoking, drinking, and using curse words. In short, it paints the image of a person with rather 'rough' or unrestrained lifestyle choices, which can be considered as rebellion against conventionality. However, it might also just be used to express a laid-back personality.