Superman talks about personal responsibility:
From Adventures of Superman 431.
In somewhat more amusing strips, I also found these recently:
And then there's this, which sent me to the urban dictionary:
here. I assumed Supermanning meant sex. It doesn't. Apparently to superman a woman means a man masturbating over her back, usually while she's asleep, so that when she wakes the sheets are stuck to her back, ala Superman's cape. According to Urban Dictionary this is considered a punishment for not having sex with the guy.
And now, I can't get that bloody song out of my head.