Boys need to learn that watching a movie about princesses does not necessarily mean you want to be a princess. Putting yourself in a woman's shoes does not make you less of a man. It makes you more of a person.
If something about Frozen is bothering you, I think you know what I'm about to say: Please, for the sanity of moms everywhere who can't handle another analysis of Frozen, let it go. Let. It. Go. LET IT F%^&ING GO.
When my daughter and I finally watched Frozen, it was three days after she had been diagnosed with Tourette Syndrome (TS). We walked into the theatre in a highly stressed state, in a degree of shock, but grateful to know what we were dealing with.