“Flipping the bird” is a form of speech protected by the First Amendment. It’s not a crime to be obnoxious. But there’s a man in Oregon who tests the limits of free speech by giving the finger to every police officer that he sees.
In 1948 in the US, pregnant women were not allowed to be teachers in 57% of public school districts because “the sight of pregnant women would unfavorably influence students” and because “pregnant teachers’ minds would not be on their work.”
In Canada it is illegal to pretend to practice witchcraft. However, completely legal to practice witchcraft.
In France, it is illegal to to publish photographs of a handcuffed suspects, as they are not to appear guilty until proven so.
From the late 1860s until the 1970s, several American cities had ugly laws that deemed it illegal for persons who were “unsightly” or “unseemly” to appear in public.
There is a strictly enforced ban on chewing gum in Singapore that has been in effect for decades. Bringing chewing gum into the country even for personal use is illegal.
Wacky waving inflatable arm flailing tube men are banned in Houston for being a “blight on the aesthetic environment”.
In 2010, The Plain Writing Act became law. It requires all federal agencies to use clear prose that the public can readily understand.
“Warranty Void if removed” stickers and clauses are illegal under a federal law passed in 1975 called the Magnuson-Moss Warranty Act. The law says that you can open your electronics without voiding the warranty, regardless of what the warranty says.
Babies born in international waters have their birth place listed as “at sea.” Those born in the air where no country claims sovereignty are listed as “in the air”.