Unc

Someone who is physically old enough to be an uncle or someone who acts older than they are. Alternatively, they are behind the times and might limited knowledge of technology and use old terms and listen to older music.

(Ex.)
Person 1: Did you read the news last night?! It was crazy!

Person 2: Alright unc, who reads the news still.
(Ex.2)

Person: Hey Chris, how do you listen to spotify? With a gramophone?! Ahhhhhh classic unc!

Chris: Huh? Say that again sonny?