Delicate Line
Konata and Yutaka catch a cold, and Yutaka's friends, Minami, Hiyori, and Patricia, come and visit her. They, Konata, and Yutaka discuss younger-sister-moe, Minami's lack of breasts and how Hiyori doesn't want Yutaka to read her doujin manga. After seeing a TV program about how xylitol chewing gum can eliminate cavities, Miyuki decides to test this out. As a result, one of her fillings comes out and she has to go to the dentist. Kagami and Misao play a video game together. Although Misao is terrible at playing them, she seems to be having more fun than Kagami who's playing to win. Patricia tells Kagami what music she's been listening to lately and how much she would like to have a maid. Miyuki tells her mother about her friends' opinions on Minami, but they seem to contradict with what Miyuki's mom recalls from Minami's previous actions. On Lucky Channel, a woman named Gotouza disciplines Akira and Shiraishi enough that they'll do one last Lucky Channel segment together.
Aired 10/09/2007EP 23 - Delicate Line

Lucky☆Star
What’s the best way to eat dessert? Do twins really have a psychic connection? What kind of guys are into moe girls? These are the kinds of questions that float through the inquisitive mind of anime super-fan Konata Izumi. When she’s not lost in her favorite manga or logging hours in one of her online games, she’s debating the mysteries of the universe with the best friends a girl could ask for.
(Source: Crunchyroll)