there was a bitter , somehow weakly peevish note in arnie 's voice that michael had never heard there before , and although he said nothing , he was startled and a little dismayed by his son 's choice of words - he had assumed arnie used that sort of language with his peers ( or so he later told dennis guilder , apparently totally unaware of the fact that , up until his senior year , arnie had really had no peers except for guilder ) , but he had never used it in front of regina and himself .