今朝有酒醉今朝
[jīn cháo yŏu jiŭ zuì jīn cháo]
This phrase comes from an old adage meaning to live for the moment, similar to 'live it up'. The meaning is quite melancholic, suggesting to indulge yourself today, since there's no guarantee about the future. It has some connotation of pessimism or nihilism