You decide not to go with the clinic hijacking plan. The machine would’ve probably be too complex for you to ever work, they had technicians that trained for years to work those things after all. You figured that it would be easier and law abiding to just train your girlfriend’s restraint. You got your girlfriend an extra large chrome stainless anti rust chastity chastity cage for her large 16 inch member, 10 inches unerect.
You decide to make it a surprise and opted to cage her monster in the dead of night. If she had known, it would be impossible to carry out your plan as she would’ve been super erect. Confirming that your girlfriend was asleep you took out the cage and went to work. She had taken to sleeping naked nowadays so all you had to do was lift up the blankets, and the object of your mission was in front of you. You placed her shaft into the cage, it wilted a little as it touched the cold metal. Then you clamp the special locking ring around her massive balls, and then you joined the two pieces together before slipping the small lock on. With a twist of the key it was locked in place. You were lucky that they made custom cages online because there was no way your girlfriend’s third leg would ever fit into normal cages. Taking the key you sneaked to your closet and hid it deep into a jar of sand, an old memento of a beach trip. Then you went back to bed, with your girl hugging you like you were her personal body pillow with the metal cage pressed against you like the metal of a brand.
Your girlfriend was surprised to say the least. She had woken up to find her morning wood pressed hard against the metal chastity device. She had pushed you off the bed in surprise and spite afterwards waking you prematurely, nothing makes a teen madder than restraint. She had guessed that it was you who had cages her and she was correct. You explained to her that it was for her own good, and that she needed to learn sexualcontrol. Of course she didn’t listen and she demanded that you take off the bondage device. When you refused, she started rummaging around your room to find the key to her suffering. It was only when time for school was getting closer, and when you blurted out that the cage would make sex better that she stopped her room destroying rampage, with ears perked up.
You explained that cumming after days of not cumming would be heavenly, the wait would be hard but the rewards, unimaginable. Your way with words stroked the horny of your girlfriend’s brain. She had never gone more than two days of not cumming ever since she had gotten male genitalia. It would be a new and wonderful experience you added. The change in her demeanor was evident when her caged junk jerked at the prospects of your words. Calming down she relented to your plans, she would try this for a while, but if it wasn’t as good as you said then your ass was on the line.
With that you both got ready for school. Perhaps you should start training your butt hole just in case of the worst predicament.