Wiktionary
shit ass
alt. (context vulgar pejorative English) A jerk; an inappropriately or objectionably mean, inconsiderate, contemptible, obnoxious, intrusive, or rude person. n. (context vulgar pejorative English) A jerk; an inappropriately or objectionably mean, inconsiderate, contemptible, obnoxious, intrusive, or rude person.