Not sure if it works as I don't have the right coin batteries, but you press the button at a corner and it says one of four obscene things.
Fair Chance Policy: I’ll wait before choosing a recipient to give more people a chance to reply.
Swearing Keychain (Glebe / Dow's Lake)
Collection Times
Porch Pickup available.
Porch Pickup available.
This offer has been gifted to someone and is no longer available.