Keep your boy humble and in his place with The Ball Tugger. Although this device has many uses, the main two are ball busting and training. This device keeps your sub’s balls behind him ready for any abuse you want to give him. As for training, physically remind your boy of his place by not letting him stand up to your level. His mobility will be restricted to a meek crouching-position as he slowly walks. In this position, he will experience discomfort; he will experience pain if he tries to stand. To avoid all pain and discomfort, he will need to kneel.