The U.S. (foreign for and to me) has or had a lot of interesting laws at the state and local levels.

A leading U.S. bicycle advocacy group noted that several jurisdictions required cyclists to use their arms to signal change of direction while keeping two hands safely on the handlebars at all times.

Several states has anti-miscegenation laws on their books until the past decade of two despite the law no longer being enforceable (some say they just neglected to formally repeal them). I wouldn't be surprised if some counties still have those on the bylaw books.

When I lived in Tahoe, I remember some story that Nevada, the state of legalised prostitution, forbade oral sex (since repealed). Don't know how accurate this report still is, or ever was.

It may not be a law of any jurisdiction but apparently many neighborhoods ban line drying of laundry as it's seen to be something done by the poor. Oregon is reportedly working on banning line drying bans.