"It’s blue," Lucas answered instantly. He didn’t even know if his Lucas’ favorite color was blue or not, but it was an answer.
He then stammered, “A-And my name really is Lucas. Look!” And then he pulled out his trainer’s card from his pocket. If anything, that should serve as a proper identification form. These kinds of things can’t exactly be faked. And it had his full name, too: Lucas A. Adams. “See? Here’s my trainer’s card!”
The Trainer card is legit, but you know Lucas’ surname isn’t Adams. You believe he really is Lucas, but not yours. You study the Trainer card for quite a few minutes. You’re honestly bewildered and confused as to how this happened.
“…okay, you’re Lucas. But my Lucas’s surname is Langley, so you’re not him. Who are you, then, and why are you here?”