An insult relating to something old, backwards, outdated, unfashionable, out of style, irrelevant, passe. Makes reference the film company which transcended from a large, well-known brand to obscurity and near bankruptcy. An adjective that is an insult.
Dude, your Pontiac Aztec is So Kodak!
After Rhianna got her faced bitched-slapped, she looked So Kodak.