My take on this is that C made the statement he did because he sees M's conduct and he is patterning himself after him. His actions seem almost retaliatory-- as if he was trying to gain some ground in his 3 1/2 year old way after M came home and brought chaos to his otherwise lovely day. And at least in my house, the relationship between the 3 1/2 year old and 7 1/2 year old involves total adoration of the older from the younger sibling. Perhaps C felt that his words would make him more like M.
If it makes you feel any better, 3 1/2 year old Miles who has speech delays but absoultely no signs of ADHD or ODD told me the other day: "I shoot you. I die you". This because he was annoyed with me and because as Seb pointed out, he was referring to one of Seb's video games. As horrific as the words were, I don't give it much more importance.
The words of a 3 1/2 year old can be prophetic though sometimes and so one wonders. I happened upon a book in which I wrote down the clever / odd things Seb said at 3. Among them he said: "I am a dangerous guy and I like to do dangerous things". This one proved to be true. But so many others were just babble. I am hoping that C's comment owes more to the context of the dynamic with M in the moment and isn't some kind of awful prophezy.
