心中自然嗨手拿爽歪歪
[xīn zhōng zì rán hāi shŏu ná shuăng wāi wāi]
It portrays someone who enjoys carefree life moments ('自然嗨: naturally having a high mood') with casual habits like drinking refreshing soft drinks (爽歪歪: refreshing beverage brand in China). This netname aims at demonstrating lighthearted, joyful living.