It’s not every day that the highest court in the land talks about the constitutional laws around pornography, but such cases have regularly made for landmark rulings. And should today’s Supreme Court arguments about an age-verification law for websites like Pornhub go down in history, future legal scholars will be treated to some bizarre lines of questioning from the justices.

Scotus heard about two hours of oral argument today pertaining to Free Speech Coalition v. Paxton, in which a trade association of the adult industry has challenged a...