A cuck should give a bull's cock a quick suck, then guide it into his wife's mouth so as to confirm he wishes his wife to become a slut for black cock.
After a cuck has watched his wife submit to BBC, the bull should place the cuck's cock in a CB3000 and close the padlock. At least two weeks hould pass before the bull unlocks the cuck's cage, and allows a prostrate milking.