Focus turns to her nipples

The delivery guy who was standing behind her and cuffing her walked in front of her and reached in his pocket. He took out a small cup, squeezed it between his fingers and placed it on her hardening nipple. The suction made her nipple hard almost instantly and before the wave spreading through her body wore off another wave was rushing through her body from the suction cup on her other nipple. Overcome by what has happened in the last moments she completely forgot to struggle or try to break free and just stood there observing what is happening in front of her. The delivery guy in front of her reached into his pocket again and took out a piece of string. Without removing the suction cups from her nipples he tied the string around her hard erect nipple just below the suction cup then took another piece of string and tied it around the other nipple. This sent two more waves through her body and she could only wait what will the delivery guy do with the strings now, but he just let the other ends of both of the strings fall down and hang freely in the air. A drip of drool escaped her gagged mouth and created what looked like another string hanging down between her breasts; only this string was thin and shiny and disappeared just before the drop touched the floor.

While she was occupied by being collared, cuffed and her nipples with suction cups tied the second delivery guy managed to finish assembly of what was in the box. She couldn’t tell what it was at first but it looked a bit like some bondage bench right from kinky fetish porn. Seeing a few bundles of rope scattered on the floor she guessed somebody is going to be tied to the device somehow. And since she was the only one in the room who was naked and wore leather cuffs, collar and waistband and whose mouth was gagged she guessed it is going to be her who will have the opportunity to test the device. And she was not to be mistaken.