Some people(not me) don't like vegetables. Pretend I am an example of someone who hates vegetables who also hates wasting food. After a BBQ I hosted, there's plenty of salad left over. I pick it up...
Want is used in the sense of 'to lack'. It means literally that if one wastes nothing, then one will want nothing. When used, it advises one not to waste materials.
The phrase "mean mug" is usually found in literature.The word "mug" in this context is a slang word for face and the phrase "mean mug" is generally meant to convey a description of a face as cruel,...
It means that the person is as important to you as is the entire world. You care for them as much or more than all of the wealth in the world. That they are your world and your interests revolve...