没喝雪碧装什么心透凉
[méi hē xuĕ bì zhuāng shén me xīn tòu liáng]
Literal meaning is 'Without Drinking Sprite, What Heart-Cooling Pretension?'. It’s somewhat humorous, indicating not to pretend to be emotionally detached or cool unless genuinely so, as drinking Sprite brings a refreshing cool feeling.