Hi! I don't think this is considered public, because you don't reveal anything.
You'll need some vibe/vibes, a long chain or metal cable with loops at ends, and a small padlock.
First, hide the padlock key far away from your house in a safe place. You can hide a backup key for safety somewhere else equally far away.
Next, go home, undress and attach the vibes (should be on), then panties on and the chain placed between your legs. Next put on jeans or similar pants. Pull the chain/cable through where you usually wear a belt and lock it to itself around the waist with the padlock after it is pulled as tight as possible.
Now, the only way to free yourself is to get the key!
If you are worried about the noise of the vibes, bring a walkman and nobody will notice.
Have a nice walk!
