She's really dressed skimpily.
Margaret is a bimbo bird that is considered Mordecai's friend. She is a Robin. Due to her bimboness, she had so many boyfriends and has contracted bimbo diarohea from the BBC for being too skimpily dressed in rock concerts.
Job
Margaret works at a cafe around the block where Mordecai and Rigby live. Since they're so addicted to coffee, they go to her cafe and she works with this raccoon called Eilleen. While they are drinkin', Mordecai yet pulls a failed attempt to ask her out for a date.