you may want to get him diagnosed. that was the first sign i had with my son at that age. he is now 20 and at age 14 i foud out he had oppositional defian disorder (ODD) he also had a problem with athority figures, arguing with me over everything. not listening to any simple order given him, could not make friends easily ect. if this sounds like your so get him help asap. not only for him but for your own sanity. raising a child with o.d.d.. is espically hard on the parents. get him diagnosed, it may be just being a teenager but if its not getting him meds will save you alot of hurt! chattycathy