I know many people when planning and conceiving a selfie wish to make the image an extend a dialog of the attributes of our souls that would otherwise be precluded by our own foibles and body language, perhaps due to being guided by many years of fitting to a society that we were part of only by happenchance. Selfies break through the psychological, to look deeper than belies, an often, somewhat gayer and more casual exterior that doth behest a more fun life of vitality and variety, to a place that even the most expert photographer cannot go. The soul and body stripped bare for the viewer to contemplate, consider and hopefully see the naked truthfulness.
Frankly speaking though, I've never been one to get my clothes off in front of a camera and still struggle to get the damned thing in focus in a mirror. My selfies tend to have the same expression I use when trying to figure out the logic behind blending modes in Photoshop.