7 timestamped notes explaining the Korean cultural context in this episode — customs, idioms, food, honorifics, and history, at the moment each appears on screen. These notes discuss events across the whole episode. To see them revealed scene-by-scene as you watch, use the episode page to find an airing.
Min-hyuk shouts that he is gay specifically so that Bong-soon's family won't worry about her spending the night at a single man's apartment. In Korean society, an unmarried woman staying overnight at a male acquaintance's home is still considered highly scandalous, so claiming to be gay is his way of short-circuiting that concern entirely.
Agarri rattles off a string of rice dishes: 국밥 (gukbap, rice in hot broth), 콩나물밥 (kongnamulbap, bean-sprout rice), 잡채밥 (japchae rice), 볶음밥 (bokkeum-bap, fried rice), 쌈밥 (ssambap, rice wrapped in leafy greens), and 맨밥 (maen-bap, plain steamed rice). The joke is that Baek-tak simply said 'rice' and Agarri is taking it absurdly literally.
해장국 is a Korean hangover remedy soup, usually made with ox-bone broth, vegetables, and coagulated blood or tripe. Eating a bowl is the standard Korean morning-after ritual after a heavy drinking session, which is why Guk-du and Min-hyuk are served it for breakfast while Bong-soon, who didn't drink, gets toast instead.
지라시 (from the Japanese チラシ, 'flyer') are anonymous rumour sheets that circulate among Korean stock traders and media insiders, often as mobile messages. They spread unverified gossip about celebrities and executives — here, the rumour that Min-hyuk likes men has been picked up by one and caused his father's construction company's share price to hit its daily lower limit (하한가).
용역 업체 are companies that officially offer 'outsourced labour' but have historically been used by Korean developers to intimidate tenants and protesters during redevelopment projects. Min-hyuk describes Baek-tak Industrial Development as having started out as exactly this kind of operation before becoming a legitimate construction company, a path that was unfortunately common during South Korea's rapid-development era.
Korean dramas frequently play on the idea that mothers have an infallible 육감 (intuition / sixth sense) about romantic matters. Bong-soon's mum insists the boss is not actually gay based purely on her gut feeling, which the drama treats as comedic dramatic irony since the audience can already see she is right.
Grandmother Soon-shim matter-of-factly tells the family she 'sorted out' the gang members hassling the neighbourhood and tells them to call the police to 'clean them up.' This is the drama's payoff reveal that superhuman strength runs in the women of Bong-soon's family — the grandmother treats brawling with organised thugs as a minor chore, played entirely for comedy.