Medieval idea. Nothing new. But the implementation could have been better. For example:

  • The shaft must not protrude outside. It can be done the same way as the stick deodorant mechanism.
  • Butt-plugs can be split in four.
  • For sheer volume (and length) a combination of a usual solid shaft and moveable parts can be used
  • Both plugs and gags can be made lockable…
  • … and connected to the outer clothes to make them lockable too