The device pictured below is called The Humbler (an electro-stim version of which is available from Mr S), and it’s used in this vintage Creepy Janitor update from Bound Gods:
If you ever get locked in one of these, then yes, you better do exactly what he tells you, because he will literally have you by the balls. Like I said, the pictures are from Bound Gods, in a shoot in which Trent Diesel gets tied up, beaten and fucked in bondage by Brenn Wyson.
For Bound Gods, click here.
To go shopping at Mr S, click here.