[Nope. He'd never even heard of either of those places, so he was even more confused than he'd been before hand. On the other hand though, this new friend certainly had an infectious attitude of happiness and he felt himself smiling despite the situation.]

Huh...I've never even heard of Waverly Bay or Equestria. Could you tell me about them?

[And before he forgets his manners any more, he'll pull his brain back in enough to remember he was supposed to actually introduce himself to new people.]

Oh yeah! Right. I'm Steven Universe, it's really nice to meet you!