Ya, thanks Stumps, that’s the general plan, though I gotta kinda sneak up on him with it, he’s getting to be a wiseguy. We’re getting our first good snowfall here tonight, and I took the occasion to talk about reindeer. He’s telling me they’re an “urban myth”… 
Challenge him.
Teach him to be himself as he already is, but an educated form (as you obviously are).
If he says Reindeer flying is an urban myth, tell him to present a case to you as to what makes him think that.
…okay, just did. He looked at me and rolled his eyes. 
He was rolling his eyes yesterday, saying he’s practicing to be a teenager.
Lord jesus help me… 
For fun, you could make him defend why Reindeer do fly according to people that have told him that they fly.
This just in… It was a miapprehension of meteorites!
I’ll try the counter-position tomorrow (it’s bedtime)
That’s a really impressive answer actually!