It's a popular phrase in Chinese, generally speaking it means " if you think you can achieve something while you are criticizing others, you go and achieve it". It always use with "no can no bb" which means if you can not achieve it, stop bullshiting" bb means talking shit in Chinese
Tyler: This chemistry thing seems to be so ez, why it takes you forever?
Me: You can you up, no can no bb
Me: You can you up, no can no bb
by Pz.Hu April 09, 2014