It expresses frustration toward people—specifically a girl at his school—who act superior and use "designer shades" to hide their lack of substance.
Posner wrote the song in his dorm room at Duke University while feeling like an outsider. Mike Posner - Cooler Than Me
The core progression is a repeating sequence of three chords. →right arrow D minor (D, F, A) →right arrow G minor (D, G, Transition: At the end of phrases, move from to F major (F, A, C). Line Dance Guide A) →right arrow G minor (D
A common pattern involves a thumb-pluck on the root note followed by two down strums on the bottom strings. Piano Tutorial Transition: At the end of phrases