トイレ使用中にノックされた時に何て言うのが正解？

What to Say When Someone Knocks on a Bathroom Stall

The episode kicks off with a small, relatable everyday puzzle: you're inside a public bathroom stall and someone knocks on the door—what do you say? One host said his usual move is either a knock back or a voiced "Hi." Both hosts agreed that the knock-back is actually a solid choice. It communicates "someone's in here" with the least possible effort, which is exactly what the moment calls for.

The other host admitted he almost always wears earphones when he goes out, and that habit carries over into the bathroom, so he often doesn't even register the knock. Even on the occasions when he does catch it, he said he tends to freeze up and say nothing, unsure what the right response actually is.

Why "Hi" Doesn't Quite Work

Breaking down what a knock actually means helps clarify the awkwardness. A knock on a stall door is fundamentally a yes-or-no question: "Is anyone in there?" Responding with "Hi" technically confirms that someone is present, but it opens an implicit door to more. The person outside gets the feeling of "okay, they noticed me—what now?" and a subtle expectation of further exchange follows. What they actually want is one piece of information: occupied or not. "Hi" overshoots that by a beat, and that mismatch, the hosts concluded, is the source of the unease.

Why "Yes" (Hai) Is the Right Answer

After working through the logic, both hosts landed on the Japanese word "hai" as the ideal response. In this context, "hai" carries a precise, self-contained meaning: "I am aware you are there." It delivers the one thing the person outside needs—acknowledgment that the stall is taken—without any suggestion that a conversation is about to start. The hosts described the internal feeling behind it as: "Yes, noted! I know you're out there!"—firm enough to register, calm enough not to escalate, and hard for anyone waiting outside to take offense at.

How Long Do They Actually Spend in the Stall?

The conversation drifted naturally to how long each host actually spends inside. One said he's finished in about three minutes, which he considers on the shorter side. The other uses a bidet (warm-water washlet) function, so he assumes he runs longer than average—but he's never timed himself, so he can't put a number on it. He also observed that waiting outside can make even a brief stay feel like twenty minutes, which the hosts found amusing as an illustration of how elastic time perception can be.

The Intestinal Condition: Current Status and Upcoming Tests

One host has an ongoing intestinal condition, and he shared an update. There are still days when he makes more bathroom trips than usual, and the stability of his symptoms tracks closely with dietary fiber intake—cut back on fiber and the condition tends to flare. Even so, he said he no longer thinks of it as a handicap. The word he reached for was "adaptation" rather than simply getting used to it, which felt like a more considered and positive framing.

On a separate note, he reported that a persistent numbness he had been experiencing in his left groin had quietly disappeared at some point. It had lingered for so long that it had faded from his active awareness, and then one day he simply realized it was gone. The scar in that area has developed a keloid texture and is occasionally itchy, but nothing outside the range of normal.

Next month he has both a colonoscopy and a CT scan scheduled. The CT will be a contrast scan, meaning a contrast agent will be injected intravenously before imaging. His doctor has also told him that polyp formation is a possibility depending on how things develop going forward.

Should You Keep Testing After Five Years of Clean Results?

This discussion was sparked by a news story about Nakamura Yuri (中村ゆり)—though the host mentioned her name with a slight note of uncertainty. According to the report, she had five consecutive years of checkups and received clean results every time. She then stopped. When she later sought out a test on her own initiative, cancer was found, and she ultimately died.

Hearing the story, the host said it made him question the standard medical benchmark: if five years of clean results means a patient no longer needs to come in, is that benchmark actually safe? He thought out loud about where the line should be drawn—keep testing every year indefinitely, drop to every two years after five clean results, or something else? He put it directly: "You could keep going for life, or you could switch to every two years after five years—but deciding where to cut it off is hard." The episode ended without a firm answer.