Dressed in hot latex the lady is jerking her master cock and you little cuckold will watch.
And that's all you can and have to do. Locked up in your chastitydevice you only can watch. No joining the mistress and especially no touching yourself.
To ensure that the mistress added some hand & foot shackles to your cockcage and of course... a gag.
Understandably the mistress doesn't want to be disturbed while she's jerking of her master cock.
Next please! Where are you pushing? Ah in the tail. Well, Ms. Dochter will have to take a closer look and of course carry out various tests.
First the vacuum pump, then take a deep breath and fuck the urethra nicely. Dilatroen are just the thing for such dirty and naughty slave cocks. Nicely sunk deep into the piss hole and stimulated, the big-titted specialist doesn't have to wait long to carry out another test