I told my son’s friend once that if he kept only  eating processed crap food, he's gonna be the size of a house. He got a bit water-eyed and said I called him ‘future fat’.  Same friend I told him the other day to ‘tie his shoes’, he said ‘no I'm good’…. I said, ‘if you fall on your face its not my fault’. 
Could I have been mistakenly disciplining him? Sometimes other kids can be annoying and you snap a bit?