Paint is a sticky, colored liquid that is used to color items. It is usually made from some combination of latex and oil or water. It comes in a variety of colors, which stores can often "match" to something you bring in, but once you put it on the walls it never looks as good as it did on the swatch. White paint is also used to whitewash items.
Some bad paints contain lead. They are bad and should be avoided. However neocons still use them to destroy the environment. Scientists suspect that most neocons were brought up in houses whose walls were painted with lead-based paint. This, coupled with the innate neocon tendency to chew on walls, leads to this, as well as the people who would vote for them.