我不是萝莉
[wŏ bù shì luó lì]
The netizen who takes this nickname wants to express that although she looks like a young, innocent girl ('Loli' is an internet slang word for Lolita, usually referring to girls of sweet and young appearance), but in fact, she's more mature or older. There may also be a sense of being tired of others always treating oneself as little, childish.