Video Description: Two of the best HuCows in the herd: Denise & Darina! We put them together for a double red cowmilker session, which is actually only for experienced and well-trained HuCows. The machine is even more powerful when used with four udders! You can see the reaction of Darina as Denise puts the last cup on her udder. There’s a lot more vacuum power now! The girls are so well trained, they voluntarily apply the machine themselves. But they need some cuffs and gags to prevent them from ending the session too early. This duo did so well! Their nipples doubled in size and became very sensitive, so the farmer rewarded both of them with clover clamps! Don’t miss this update!