How’s it hanging? informal question slang
How's it going?; how are you?
A: "How's it hanging?" B: "I'm fine, thanks!
Be outside the ability or willingness of someone to care more about a particular person or issue
An individual should only work on and care about his or her work, and should not interfere with others.
Used on notices to mean that to seek for more information, you should come inside and ask
To spend a lot of effort, time, and care on doing something.
Many sources point to the 1985 for the origin of this phrase.