adj. Term used to indicate a hipster connection to a nostalgic item. Also used by pop-culture elitists to determine an item as 'passe' in the hipster subculture, but can be still discussed in a sarcastic sense-literally, post-ironic.
Assoc. with post-post-ironic, post-post-post-ironic, etc. (usually, each additional prefix represents an additional level of separation from coolness).
"When I saw a picture of Justin Timberlake wearing a trucker hat, I was wondering if he was being post-ironic or if he actually thought it was cool."
"Enid's outfit was the epitome of subculture Elite, complete with a post-ironic plastic Best Friends necklace from 1995."