Your mother's husband's daughter's son is your nephew.
the answer is nephew
it is either nephew or it is my son !
A girl hugged and kissed a man, and later introduced him to her friend as, "He is the only son of my mother's mother-in-law."
Well, who was he?
Pointing to a girl in photograph. Amar said, "Her mother's brother is the only son of my mothers's father." How the girl's mother related to Amar?