I tried to figure it out but got stuck on the linguistic dilemma if he's lying about the concept of himself existing ("All of MY hats"). Then I decided I have better things to do.
He may also be claiming that the hats are ecologically friendly.
Are we also to assume that if all the hats were each mainly green on the outside but had brown linings, they are, or are not, each said to be "all green"?!
I need a pint.
The tests typically begin by instructing the sitter to try not to assume anything in each question. They presumably mean that you shouldn't assume something like women liking the colour pink more than men.
But actually, there often are a bunch of assumptions you need to make, such as that there are seven days of the week with the standard name and sequence. That the word for each number has not been switched with some other. Etc...