Or he heard it in the background at the grocery store, Restaraunt, or mall. I could see a kid hearing something a parent was too busy to hear in a public place. If he did hear a conversation in Russian and it stuck in his head long enough to repeat it correctly later, yeah, I'd be fishing around for someone who might understand too.
I told the hubby what I'm typing right now because he's sitting here watching tv and he said yeah, our three yr old just heard a song in the car and we came inside and he was singing it. I know I've been at the store and he hears a baby crying across the store, faintly, that I didn't notice. I know because he says something.
So, yeah. It's more likely that you saw what you thought you saw happen and it's related to giftedness.


Youth lives by personality, age lives by calculation. -- Aristotle on a calendar