shit in one sock 

to be organized, to be able accomplish a task

If you don't get your shit in one sock, you are never going to get that project done on time.

This term originated in the US Navy, and a "sock" is a term for seabag. A sailor who was not organized would not be able to put all of his belongings in one bag to be ready for quick deployment. Hence, the need to "get your shit in one sock".

After watching someone perform a task really well, you might say "Wow, that guy really has his shit in one sock."

shit in one sock by The Real Davy Jones January 16, 2008