Room 153 Share definition Flag The one math room where the air smells like piss and everyone has an average of 36 or under. Kid: Yo dawg, gotta hit up room 153 next period. Other kid: Dammn good luck. Room 153 by Boing Doinkus December 20, 2018 0 0 Get merch Get the Room 153 mug. Buy Now — $32.95 See more merch