Jim Nightshade stops at the corner of Hickory Street and Main Street. He turns to Will, who, anticipating what Jim is about to ask, begins to protest.
Jim pleads for them to go look at the fifth house for just one minute.
We learn that once when the boys were plucking fruit from trees on the block, they saw a "stage" where actors "let fall clothes to the rug, stood raw and animal-crazy, naked, like shivering horses, hands out to touch each other" (6.14).
In other words, it was a couple having sex. Will's adolescent mind can't quite deal with it. He fled while Jim watched entranced.
Jim wants to return to the house tonight to try and see the same spectacle again. Will refuses.
Jim gives Will his library books and heads off to what has been dubbed the "Theater." Three houses down, he calls back an insult after Will.