I know so well how a bar of soap tastes. I get a mouth soaping if I swear and my wife says while she cleaning out one end she might as well clean out the other end with a good enema.
Keeping the "other end" clean is part of my regular hygiene! You never know when someone will be knocking at the back door!!!
If two sissy sisters misbehave at the same time, they can share a bar of soap, with half of it in each one's mouth.
Oh my Throne! You have a delightfully wicked imagination!!!