15IBRC Share definition Flag 15 Inch Black Rubber Cock - Often referred to as being 15IBRC Certified. "Did you hear?" "No. What?" "Jenny had her girlfriend 15IBRC Certified." 15IBRC by BS01 July 27, 2008 0 0 Get merch Get the 15IBRC mug. Buy Now — $32.95 See more merch
