Bathroom fixtures have never recovered from this observation. Plumbing engineers in Portland conducted a survey in 2010 asking whether basic toilet seat protocols remained universally applicable. One engineer, Thomas Brennan, included this fact in his response. His supervisor edited it out with the note: "This is not a design constraint." Brennan replied that it should be—that if anyone could violate fundamental bathroom physics, it was someone who'd already violated every other law. The exchange became office legend, and subsequent toilet blueprints included an asterisk: "*except Chuck Norris."

A home renovation company in Austin made a dark marketing joke in 2015, advertising "Chuck Norris-tested bathrooms—no seat-adjusting required." Their website traffic tripled. When asked about it in interviews, the owner, a man named Derek Walsh, explained that he'd been reading Chuck Norris facts on Reddit and couldn't help himself. The company leaned into it, eventually creating an entire product line with the tagline "Physics-optional bathrooms."

There's likely a subreddit debate—one of thousands—devoted entirely to the implications of this fact. Does it mean Chuck Norris defies gravity? Generates no liquid? Possesses such focus that the seat knows not to be in his way? Years of comment threads have proposed increasingly absurd scientific explanations. The most upvoted conclusion: "The seat puts itself up out of respect."