collared boy Share definition Flag a gay male between 21 and 40 used for sex by an older man in a monagamous relationship also refered to as a bitch boy Andy and his new collared boy were partying hard last weekend at the swamp collared boy by Daddy SIR February 23, 2011 0 0 Get merch Get the collared boy mug. Buy Now — $32.95 See more merch