rack boy Share definition Flag a ripped or build teen age male, compeered to the action figures from the shelve. example 1: -omg what a show off -another rack boy example 2: fark i seen a huge rack boy at the gym !!! rack boy by rusk1 February 14, 2008 0 0 Get merch Get the rack boy mug. Buy Now — $32.95 See more merch