Just like a the O-ring bit gag but with a wicked twist. This gag has a rubber 5.5 cm long tongue attached that fixes your own tongue. Unable to move it, it makes it harder to speak and easier to submit to the orders of your dom.
Pony play aficionados love it and use it all the time to keep their beasts under control and force them to follow orders. Also, a favourite between drooling lovers, the amount of saliva that you will produce is insane.