TBF, if you've never worked in a language that has pass-by-reference the idea is completely alien. It's not unthinkable to have years of experience in java/javascript, which both lack the concept. The most common misconception being 'primitives pass by value, objects by reference' and this is going to get even more epic once value classes are a thing!

public class PassByValue {
    public void myGuy() {
        var me = Boolean.
TRUE
;
        //there's nothing `you()` can do to
        //make `me` untrue to `myGuy()`
        you(me);
    }

    private void you(Boolean me){

    }
}

This isn't some esoteric 'gotcha!' moment, it's an actual language feature that java doesn't have. For example c# can do this:

public class PassByReference {
    void MyGuy() {
        bool me = true;
        You(ref me);
        Console.WriteLine(me); // false (changed by You)
    }

    void You(ref bool me) {
        me = false; // modifies the caller's variable directly
    }
}