姑奶奶

gū nǎi naigunainai

1. paternal great-aunt (father's father's sister)
2. (respectful form of address for a married woman used by members of her parents' family) married daughter
3. (brassy self-reference used by a woman in an altercation) I; me; this lady here
4. (coll.) form of address for an unmarried girl or woman, expressing affection or reproach

Study it in Yanamino