流氓学姐
[liú máng xué jiĕ]
Rogue Senior Girl uses a slightly unconventional image combining 'rascal' or 'bad boy/girl character', often playful or mischievous with experience or superiority in school environment suggesting senior year. However, this term does not have negative implication but implies someone cool, free-spirited and maybe little edgy who doesn't strictly follow norms.