He would know that voice anywhere, even if it was a younger version. Luckily, he'd already ran into his mother - which he was still trying to wrap his head around, so he knew that Sam was there. He'd actually been on his way to find him when Sam found him first.

"Sammy." He cocked an eyebrow with a hint of amusement, "you're not gonna pull a silver knife to see if I'm a shapeshifter are you?" Which actually wasn't a bad idea, especially in this place.