这是白开水装什么优乐美这是酸牛奶装什么特仑苏
[zhè shì bái kāi shuĭ zhuāng shén me yōu lè mĕi zhè shì suān niú năi zhuāng shén me tè lún sū]
These are popular drink brand names used sarcastically. It means something ordinary pretending to be fancy: 'plain water pretends to be premium tea, yogurt posing as luxury brand.'