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