Not sure were you are getting your information from, but clearly not well conceived as the individual likely has just a bit more information than you.
“Beaking” sometimes called pressure testing commonly occurs with Younger Parrots and/or a Parrot in a new environment as they naturally attempt to push boundaries (or at least find them). The correct method would be to start by saying no, in a normal voice and continue to increase volume, while taking care not to turn this into a game called: The Amazon is In Control! I am continually disappointed in the lack of understanding about stating 'NO' and one matching out of the door, leaving the Amazon waiting in painful disappoint as their Human no longer loves them.
The Correct method comes from an Understanding of Amazon Body Language, which is well detailed at the TOP of the Amazon Forum. Read that Thread with Understanding!! Take it on as if it is your primary Language as your Amazon Expects you to know it as so! Amazons, as a very large group have a very defined body language that provides you with an understand of just how they are feel at that precise moment. In this case; Your correct response such be a short series of no, No, NO. Set the Amazon down and turn away for no more than about one minute. Any longer than your Amazon is no longer connecting you turning away as becoming connected to the "Beaking".
Take-on the task of "Learning Amazon Body Language"!! Guessing you are in North America, Amazon Hormonal Season is quickly coming and your Young Amazon will likely be affected to some level. Knowing what your Amazon is telling you will be crucial to keep you from being bitten very hard for not paying attention.
You are now 'Owned' by one of the Amazon Families famous: "Big Hot Three!!" Your knowledge level needs to rapidly grow as although they are true lovers, they can be very unforgiving to those who are totally unaware!!
I am owned by a 26 year old Double Yellow-Headed Amazon. I never, ever approach him unless I let him know 'in advance' that I am coming and what we are going to do. That may change if he happens to be in a full-on Hormonal Chemical Rush, or just not that interested, which means I suck-up my pride and move-on.
After you have a basic understanding of Amazon Body Language, it will be time to take on the much larger Segment found just below the segment on understanding Body Language! It is called "I Love Amazons -..."
Your Amazon is Waiting!!