The balcony was on the end of the building and had a large brick pillar at each corner. I would use a 1 metre chain between my ankles, wrapped comfortably and padlocked. Another 1 meter chain for my wrists, wrapped comfortably and padlocked too. The third chain was a little longer, one end went around my neck and was padlocked, the other end went around the pillar of the balcony and was locked with a combination lock.
Since I had closed the balcony door, and turned of the lights, all I could do was revel in my chains till the sun came up and illuminated my combination lock so I could release myself.
Do you think I masturbated? In could not stop! I always had several orgasms, only limited by the noise of the chains.
pic related, but I'm male.