It would be super rude, gosh. But he'd probably agree. He is super cute.

"Tell me about it. It's even weirder for me because that's what my race is called. Earth ponies, as in actual dirt," there's a pause, because he's aware he should explain that a little more, given this guy probably knows little about pony culture. "We're the only race that can grow food and tend the land y'see. Only kind of pony strong enough to do it. But still. Race name, not planet name. Calling your planet 'dirt' is just....weird."