When Danny Bailey says "Yee honk!" (during the shooting gallery sequence), that is a parody of a recurring dialogue in the Broadway musical "The Music Man", in which a young couple (Tommy and the mayor's daughter) habitually exclaim "Great honk!" and "Ye gods!". So "Yee honk!" Is a mix of those two expressions.
What is referred to on this show as a "picnic basket auction" was actually known as a "box social" in the olden days when these events were popular.
They started out as a way of raising money for a charitable cause, in which the women of the town would prepare a boxed lunch, and then the men of the town would bid on them, with the proceeds going to charity. Box lunches prepared by women known to be great local cooks would bring more money than those prepared by those of less talent in the kitchen.
But since winning a boxed lunch also included having lunch with the woman who made the lunch, men would also bid more on lunches prepared by pretty girls then for those prepared by less-attractive women.
So the auction events quickly became a social event, and a unique, socially-acceptable dating ritual. Men who wanted to spend time with a particular young woman would bid on her boxed lunch as a way of setting up a date with her. And if the young woman was already involved with a young man, the two would try to arrange things so that he would buy her boxed lunch, to avoid her having to go out with someone else.
When Mildred is describing the kind of books that she wants banned, she specifically cites the works of Chaucer, Voltaire, and Balzac. This is similar to the list of the authors of "dirty books" cited in the song "Pick-A-Little, Talk-A-Little" in "The Music Man": Chaucer, Rabelais, and Balzac.