sexing corns

[Snakefood]

so I was reading a thread on another forum about the mistakes that can be made when sexing snakes.

It caused me to wonder if my male IS a male. It wouldn't matter to me (other than his name is masculine) but I would like to know.

They were talking about "false females" and how mistakes could be made and how probing on adult snakes can even result in a false female. And how popping babies was more a process of elimination (ie: I can't prove it's a male by popping, therefore it is a female)

So I have 2 questions from this.

a) is popping the only method used on hatchlings?

b) is there such a thing as a "false male" when popping is the method that was used?

I did not ask the breeder what method she used to sex him, but will see her again on sat, so will ask then.