I am a US citizen living in the US. Though I am a legal adult and financially independent, I sometimes travel internationally with my parents. Once we arrive at our destination, my parents demand that I turn over my passport and withhold it from me until it is time to return home. This is unsafe because they can stop me from leaving the destination country. Moreover, as a matter of principle, I don't want anyone else to have possession of my passport. (If I refuse to turn over my passport, they will steal it while I'm sleeping or showering, etc.)
Is it possible to legally obtain a second, fake passport to satisfy my parents that I have turned over my passport to them, while keeping my real passport in my possession?
If not, is it possible to obtain a second, real passport in a fully legal fashion? (This is my preference if possible.)