The group of girls(sometimes boys) that were either not popular enough, not skinny enough, not limber enough, or not bitchy enough for cheer leading. Often seen as the bands add-on, the color guard is either terribly bad and thinks their hotter than the forth of July, or so good that they can only think about becoming better. (These ones usually have more than three guard captains/coaches and are either college or professional color guards)
Hey did you see the color guard at our performance last night?
a large group of fat ass teenage girls that were too ugly to make the cheer squad and too fat to make the dance team. so instead they are in color guard where they wave flags around at half time and cause the entire male student body to vomit profusely. commonly referred to as the dogs, boys bark and ruff when they perform when they aren't vomiting.