Missy Van Licks and I attach our two slaves to a pulley so they are completely at our mercy. We use inflatable pressure collars to test who can last longer without oxygen and the loser has to give the other one a blowjob. The latex sissy buckles and has to get on her knees. The Rubberboy, still fixed in position, now has to harden his willy. Who has won here and who has lost? (Part 5 of 8 from Fullclip Dominant Rubber Chucks Ladies)