Non means no!

My son started kindergarten at a French Immersion school recently, and has been reluctant to speak, though I know he understands at least a little of what is said, and he can devine much more from the context and tone of the teachers. Still, he has not been speaking any French, and hasn’t wanted much to tell me about his school days (normale, je sais!)
Breakthroughs come in small, surprising packages sometimes.

The other morning, while getting ready for school, we began our usual “I hate brushing my teeth” dance, and when I told him to come to the bathroom, he gave me a very Frenchified “Non!” in response.

I said, "Did you just say Non?”

He said “Non!” again.

Flabbergasted, I said the first thing that popped into my head:

“Un...”