Condition in which you excessively think about prom, things related to prom, prom dresses, prom hair, prom shoes, prom makeup. Only cured by attending prom.
Girl 1: "I keep looking at prom dresses even though I already have a dress!"
Girl 2: "I think you might have prom brain."
Girl 2: "I think you might have prom brain."
by PrimadonnaGirlWantingTheWorld March 9, 2015