The Zap power allows you to kick a user and make their chat shake while playing a sound. To use Zap, click a users name then the "Kick" option, type a reason and click "Zap". If you are a member you can zap banned guests (you need Superkick power).
To change the sound of the Zap (default is #raspberry) add a # followed by the audie you want. You can find a comprehensive list of audies here.