Grease brings back the teen-age life style of the 1950's The boys wear short hair swept back into elaborate greasy coifs called the D.A. or ducktail. They sport motorcycle jackets, pegged pants, turned up shirt collars and T-shirts with cigarette packs secured in rolled up sleeves. The girls wear beehive hairdos complete with hair clips. They chew gum and wear boys' windbreakers with their names sewn on. They pierce their ears, wear pedal pushers, spongy white bobby socks, cinch belts, long felt skirts and crinolines.