Your sister's grandfather's wife's grandson's son is your which relation ?

Your

Sister's

Grandfather's

Wife's

Grandson's

Son

is your NEPHEW !!

What relation is your mother's brother's cousin's son to you ?

What relation is your brother's cousin's aunt's sister to you ?

What relation is your mother's sister's husband's son to you ?

What relation is your father's brother's daughter's mother to you ?

What relation is your sister's mother's father's wife to you ?

What relation is your brother's mother's son's niece to you ?