Secret Agent Colin:
Ha ha! You look confused. Let me explain.
You cannot enter the secret Oracle dressed like that. You must disguise yourself.
But you can't do it without the disguise scroll.
Even more important than your disguise, though, is how you act once there. You must be quick on your feet!
You must make others believe your disguise is authentic by your actions, your words, your mannerisms. Let's practice.
First, disguise yourself as a frog and approach the Frog King at the nearby lake. Ask for an item and bring it to me. Anything is okay.
Remember what I told you. Keep your wits about you!
Take this Frog Disguise Staff. I'll keep that letter of introduction -- just go on.