It didn't come as much of a surprise to see the cup was empty, Sam having predicted it would be. With a sigh he nodded, handing over the quill and wishing he was brave enough to call out the rather obvious con artistry going on.
The suggestion of another game at least was something he felt able to deny, thinking that letting Theo con him once was enough to satisfy the crook for now. "N-no...no, I don't think I will." He shook his head, turned to leave...then something in him, perhaps a shred of the confidence he'd earned over the last two years coming to life, made him look back. "..I know. Tha-that this isn't real. The b-b-ball is in your pocket or something. When you sw-swap the cups. I'm not st-stupid."