Don't forget: he's still a child in an adult body.
He's 60s right now, but he only had a massive growth spurt when he was 60 so most of his life, he's pretty much a child. Check 87 for clarification and even his mannerisms and beliefs right now are that of a child.
Didn't we already have an embarrassing form back when we did Demon Priest's silly backstory? Still, it's nice to see Twilight getting serious for once, even though it probably won't amount to anything in the end.