yaboys21 Share definition Flag A term when referring to when one must act like a homosexual in order to replicate what yaboys21 did in the year 2020. "Dude, are you acting gay?" "For sure man, I'm pulling a yaboys21!" yaboys21 by genericgamerdefinitions September 24, 2022 0 0 Get merch Get the yaboys21 mug. Buy Now — $32.95 See more merch