你的女儿要喊我干妈你的儿子要喊我干妈
[nĭ de nǚ ér yào hăn wŏ gān mā nĭ de ér zi yào hăn wŏ gān mā]
This is humorous, implying someone's influence or seniority in a close relationship, almost like an affectionate joking declaration of becoming family through adoption ties (godmother).