[Yeah, he wrinkles his nose a little at that himself. But.]

One night won't kill you. You can brush them in the morning. I'll put out a spare toothbrush for you.

[... and, again, he rests a hand on the kid's shoulder. Loki is louder than before, and angrier; it sets up a resonance, and he winces.]

I said, close your eyes. Don't tell me you actually need a bedtime story.