Engraving a custom message or name on your iPod is cool, especially when it is free. But having it rejected by Apple is not cool. Some of the rejected engravings:

• 10,000 Stolen Tunes Inside* ~Anonymous
• Not to be used as a suppository.* ~Umbralkin
• I cost more than three hookers.* ~Umbralkin
• When my battery dies, so will you.* ~Umbralkin
• Not responsible for prolonged damage to the ear & brain.* ~Anonymous
• iPod Limited Edition: Retard Compatible. * ~Jimmy4Kim

More at methodshop.com

Some relevant posts you might be interested:

• I won an iPod shuffle!
• iPod Touch – An iPhone Without Phone
• Best iPod Anti-Theft Idea