The novel is read and held in high regard by many soldiers. The term "skinny" is most popular for its usage in Mark Bowden's best selling book and later movie, Black Hawk Down. The Rangers referred to the Somalis as "skinnys" because they had read Starship Troopers.
To be more exact, to be skinny is to lack fat, bulk or to weigh or appear to weigh less than average. This does not make a person worth less or more!! Word up, kiddies!
During world war two until the late 1960's, military orders in the Marine Corps were copied on paper that resembled the skin of an onion. It was extremly thin and fragile, and translucent in appearance.