The term 'Cotillion Presentees' refers to young women who are presented at a cotillion, which is a formal ball or dance. The term 'DEBS' is an acronym for 'DEBUTANTES, ' which is another name for the young women who are presented at the cotillion. These young women are typically between the ages of 16 and 18 and are usually from wealthy families. They are presented to society in a formal ceremony and are expected to adhere to certain etiquette and social norms.