Findings:

• Knick, Knack, Paddy Whack
• The Big Whack
• House of Whacks
• Whack and Unwrap
• Whack Your Porcupine
• Whack whack
• whacked (user)
• whack off
• out of whack
• schema
• whack
• default xmltrue schema (schema)
• Star Schema
• XML schema

If you Log in you could create a "My Schema are whack" node. If you don't already have an account, you can register here.