WordNet
mother's son
n. a male person; "every mother's son who could walk was there"
Usage examples of "mother's son".
This was the work of that Spanish stranger whom I had met as he hurried from the place of murder, who, because of the wickedness of his heart or for some secret reason, had striven to slay me also when he learned that I was my mother's son.
It was his cheery custom to pass in the rear of the men, and with a short, bludgeon-like stroke of his forearm slam down on the regulation burden on the back of every mother's son.