When it's gray rape, 'parently. At least one journalist in attendance put it bluntly, but correctly, “For me, rape is rape. I really didn’t know what that term meant.” It supposedly refers to semi-consensual sex where proper communication of the 'acts to be performed' wasn't committed to written record, with a notary, beforehand; a/k/a 'sour grapes' or "But she said she liked cleveland steamers!"