Source Unknown (There’s an awful bleached version floating around with more recent origin.)

I’d have posted this solely based upon how  pink her cheeks are, honestly. (I’m a sucker for actually physiological discernible cues of sexual arousal.)

But there’s also her mouth hanging slack, half-open–I can almost here her rapid, shallow, slightly raspy breathing.

And despite not really being a fan of close-ups or selfies, this somehow works as an image–if for no other reason than the boy on top seems to be the one taking snapping the picture (therefore justifying participant proximity to the action).

Also, the image implies the explicit without revealing much more than would a skimpy swimsuit. For me that serves to narrow the focus sharply to the passion and immediacy acting in the moment. To me, that’s always haute as fuck.