One case in particular comes to mind. In a first-century Greek papyrus letter known as P.Berenike 2.129, found in a Roman dump in Egypt, a mother named Hikane writes to her son Isidoros scolding him for not writing to her. The papyrus is fragmentary, but Hikane’s frustration is clear. Through rhetorical coloring, she reminds Isidoros that she carried him in her womb for ten months and nursed him for three years. So, what is the moral of this story? Maybe it is that you should write to your mothers. Otherwise, you could receive a letter like Hikane's. Or worse: your mom takes her anger to Facebook!
Here is the opening of Hikane's letter:
“[Hikane] to Isidoros [her son, greetings. First of all] I thought it necessary, since the packet boat was putting out to sea, to write . . . me. I am in Berenike. I wrote you a letter [?but did not receive a] letter. Was it for this that I carried you for ten months and nursed you for three years, so that you would be incapable of remembering me by letter? And similarly you dimissed me though the Oasites . . . not I you. But I left your brothers in Arabia . . . so that . . Egypt I might see your face and . . . breath. I only ask and beg and adjure you by the one whom you . . . and by the memory of the one who begot you, to sail away if you are well.”