My step sister helping me to jerk off.my sister gives me a nice blow job?? There are just two subjects—death and sex—says Philip Roth, one of the greatest living writers. This prescription creates great difficulties because Martin Amis and others warn writers against trying to describe sex. The attempts are almost always a failure, which is why each year the Literary Review’s Bad Sex Awards have such a rich crop to choose among. But I have at last encountered a convincing and arousing description of good sex, and my wife agrees with me. I found it in a most unlikely place. Before I reveal all I want to credit Beth Kilcoyne, my near-sister-in-law, with the acute observation that Jane Austen is the most erotic writer in English. Not an ankle is seen; no clothes are removed; and there is no sweating or heavy breathing. But nor to be pedantic is there an attempt at describing the sexual act. Austen followed Amis’s advice. I suggest too that it’s easier to write about bad—or at least whol