俺猥琐了一个夏季偶放荡了一个冬天
[ăn wĕi suŏ le yī gè xià jì ŏu fàng dàng le yī gè dōng tiān]
This nickname playfully and humorously describes spending summer being sneaky (or mischievous) and winter behaving carelessly or unrestrainedly. The colloquial language adds a casual tone.