If something is waste it is poor/bad. Somehing you didn't enjoy.

A person who has done nothing with thier life and never will...

(noun) A person or thing that is not worth the amount of resourcers necessary to keep it alive.(air, oxygen, water, amino acids, life ect.)

Something that comes out the bum or has done nothing for humanity.

Sometimes can be combined, check examples.

To kill a person, usually by shooting usually via a drive-by. This is almost always done by Gangsters or Thugs or possibly a lone Gangster or Thug they are almost always in a Gang. In short, they are all just fags

a terrible thing to mind

someone who is very horrible at everything. They just plain suck. They are a waste of space.