Jack Bollock Share definition Flag A Norfolkism implying the existence of a third testicle. Not the left bollock nor the right bollock... but the Jack Bollock. NFN. You won't think it's so fucking funny when that wasp stings ya on your Jack Bollock! Jack Bollock by renstar September 17, 2015 0 0 Get merch Get the Jack Bollock mug. Buy Now — $32.95 See more merch