D.A. (Duck's Ass)
The D.A. (or duck's ass) was a hairstyle popular in the 1950. This hairdo contributed to the term greaser as the style required a substantial amount of gel.
A mullet is a hair cut where the hair is short in the front and long in the back, justified with the phrase: Business in the front, party in the back.
An updo is a hairstyle generally worn by women for special occasions such as weddings, proms and formal affairs, often with the assistance of pins and clips.