How would taking an “X raised by Y” trait via the Adopted trait work?

Let’s say I’m a non Half-Orc and I use Adopted take Iron Control (Half-Orc raised by Humans).

Would I have to be adopted by Half-Orcs, get disowned or otherwise lose my Half-Orc parents, then get re-adopted by Humans? Would I have to find a Half-Orc orphan, learn their ways of rage, and then get adopted by Humans with the Half-Orc so they’d raise us the same? Could I just be born abnormally angry and the Humans who adopt me decide to raise me like they would a Half-Orc? God forbid anyone tries to trace my lineage.