Findings:

• security card shuffle
• Kansas City Shuffle
• Melbourne Zombie Shuffle 2009
• Sonic Shuffle
• Times Square Shuffle
• shuffle (user)
• iPod shuffle
• Slam Shuffle
• Thorazine Shuffle
• The Super Bowl Shuffle
• Shuffle off this mortal coil
• The Wild, the Innocent, and the E Street Shuffle
• Chinatown Shuffle
• Gateway Shuffle
• The Midnight Server Shuffle & Colo Club
• sidewalk shuffle
• riverboat
• Truffle Shuffle
• Haymaker shuffle
• Shuffle Off To Buffalo
• Hollywood Shuffle
• shuffle
• Riverboat (user)
• The Fabulous Riverboat
• answer: two riverboats
• old chestnut: two riverboats
• riverboat casino

If you Log in you could create a "Riverboat Shuffle" node. If you don't already have an account, you can register here.