"from either sex at either end" as the famous Roman poet whose name escapes me said.Welcome to the world of confusion,which may or not lead to certainty. From a Mudcatter whose cookie is twmporarily crumbled, and is perhaps not sufficiently American to do full-on sexuality discussions online.I will say it's fine from both directions. Think Ma Rainey and Bessie Smith(but don't hang your elbow out of the car window)