Dustin blinks in surprise. This is a possibility he'd considered, but for whatever reason he had assumed that, if Donatello was from Earth, he'd be from some strange, alternate version of it, so far removed that it would be nearly unrecognizable. The fact that New York City also exists and that a humanoid, sapient turtle lives in it feels somehow stranger than the alternatives.

"Huh," he mumbles - his best attempt at voicing all of those thoughts, apparently. "And you're...from...there?"