The Butter Battle Book: Summary & Analysis - English Class ... The Yooks did not trust the Zooks and the Zooks did not trust the Yooks. As time passed, the conflict became more intense. So, the Yooks built a weapon to keep the Zooks away, called the Snick-Berry Switch. In return, the Zooks created a bigger weapon, the Jigger-Rock Snatchem, to keep the Yooks away.
