As used by suburban St. Louis, MO area junior and high school kids of the late 70s and early 80s, a socie is one of the posh kids with trendy, adult-approved clothing, good grades and a fondness for weak pop culture. A socie is the opposite of a freak, who wears torn Levis, boots, Busch beer t-shirts under ragged flannel shirts, loves classic rock and smokes as much dope as possible.
Aw, Jesus! It gets worse every day. He used to be cool. Now he's got a pink Izod on. What a fucking socie.