Exchange Flesh Meaning

(rare, archaic, idiomatic, euphemistic) To engage in sexual intercourse.

Example: 1610, William Shakespeare, The Winter's Tale, act 4, sc. 4:
  [I]t was thought she was a woman and was turned into a cold fish for she would not exchange flesh with one that loved her.
1977, Jane Lane, A Secret Chronicle: Edward II, ISBN 9780755108282 (2002 House of Stratus reprint), page 140 (Google preview):
  [W]ill-she, nill-she, she must have Roger's company nightly in her bed, to ensure that he lay not with another. . . . To exchange flesh with Roger she would bid all the world defiance.
1997, Gail Hershatter, Dangerous Pleasures: Prostitution and Modernity in Twentieth-Century Shanghai, ISBN 9780520204386, page 210 (Google preview):
  She thinks to herself, What crime have I committed? If two people exchange flesh for money, why is it that only the one who contributes the flesh is a criminal and not the one who pays?