I always remember my driving instructor being very proud that his son “knew” that milk came from cows.
I asked him, “well where else were you expecting him to say that it came from?”
He was only about 5 years old so things alternatives such as goats I thought would be a bit more abstract.
He replied with the supermarket!
I tandem fed my boys and they both stopped around the 4 years old mark.
So this funny moment shouldn’t really have come as any surprise.