Negación nocturna - provocación y negación

It's bedtime. But I want to play with my slave a little, and test his ability to control himself. Being disciplined is a requirement to be a good slave. Slave has been conditioned to be aroused by the scent of my ass. So he must keep his nose directly on my asshole while I sit on his face and tease him.  I mercilessly tease, torment, and edge him with my hands and vibrator- and cumming is not an option. I constantly remind him to keep sniffing my ass while teasing him, and using my vibrator on myself. I end up having an amazing orgasm, and he gets denied.. Hehe