Reminds me of my nephew 2-3 years ago.
Had an opinion on everything
Would bite on any less than complimentry comment
Knew nothing.
It seems to be a trait of teenagers and I'm sure that we were all guilty of it to an extent. Fortunetly my nephew took the same advice as Nick0021 offered and he is now shapeing up to be a smart young bloke with a little bit of experience behind his overactive mouth. I just hope it continues.