There is no need to be like you said "cool" my reputation is already established and it would be really pointless to TRY and act "cool", when I already am =).And pointing out his gramma will only help him in the long run to approach managers in a more professional manor as well as preventing typos in his coding when/if he starts to code. So shouting my comments down and "TRYING" to be cool is not that very "cool" at all..