pie had the sexual connotation decades before American Pie, see notably "hair pie" at least from the 1960s; also earlier cherry pie with its jailbait associations; I would imagine also dating back to the early part of the last century in Black vernacular, see for comparison jelly roll.

cream pie only recently took on its modern meaning; prior to the last decade or so it referred to the same thing it does now, but only in the context of eating it. search usenet archives (see asstr.org) if you feel an uncontrollable need to learn more about this.

creaming, your jeans for example, equally applies to women.