"This is barely dancing," Steve points out, not because he's trying to push said luck, but because yeah, sure. He can do this just fine.

His smile does turn more rueful, and his voice is maybe a little too light when he ducks his head and admits, "You probably wouldn't really like the explanation."

It's not a complete brush-off, honestly. He just really doesn't think B will like the answer, even though it had, funny enough, been on his mind just a few minutes ago.