Board Thread:Questions and Answers/@comment-30947559-20170211010707/@comment-4500149-20170211080255

The trivia question text is normally blue. Do you mean purple? Club Penguin intentionally made some words purple to hint towards the requirements for tipping the Iceberg during the party. When put together, the hidden message reads: "5 Dark Blue Penguins with Blue Puffle Jackhammer iceberg"

As for your question about Sensei's walking stick, Sensei uses a broken tusk from his rival, Tusk, as his walking stick. You can read about the backstory on the Sensei or Tusk article if you're interested.