as common as dirt

بى‌ادب ، بى‌نزاكت

_ Do you know Mr Smith ?
_ of course, everyone knows that he is as common as dirt

_ آقاى اسميت را مى‌شناسى؟
_ البته( كه مى‌شناسم) همه مى‌دانند كه او بى‌ادب و بى‌نزاكت است.