When Scout becomes suspicious of Dill's suggestion to go for a walk, how do the boys' respond?

Dill wants to go for "a walk," but it turns into something more: Jem and Dill want to sneak over to the Radley place and peek into one of their windows. Scout doesn't want them to do it, but Jem accuses her of being girlish, an insult she can't bear, and she goes along with it.