长腿欧巴长腿欧尼
[zhăng tuĭ ōu bā zhăng tuĭ ōu ní]
Long-legged oppa, long-legged older sister comes from Korean language where 'oppa' refers to an affectionate term used by girls/women for older men they admire, and 'eonni' is used similarly between women for elder female peers, plus the mention of long legs gives an image of physically attractive individuals.