mr.cary Share definition Flag One of the best math teachers on earth. His clickers give excitement to his famous room #220, and it's always lit a bit there.He will help you with math if you are stuck. Dude, i go to Mr.Cary's math class next. mr.cary by EleKos220 May 9, 2018 0 0 Get merch Get the mr.cary mug. Buy Now — $32.95 See more merch