While signing up as a member of this community, I was trying to invent the ideal screen name. First, I used the name of a baby animal (e.g. fawn, owlet, gosling, larva, fledgling, ect.) and paired that up with a title/animal that fits me in a nut shell. With this process of mixing and matching, there were names like Biogeek_Baby, Biogeek_Owlet, Okapi_Colt, Gosling_Geek, and Biogeek_Larva. None of them worked out, and names like "diaper" and "baby" seemed to be overused.
I dropped the tactic of using names related to diapers and infantialism, mentally reshuffled the deck. The overenthusiam of wanting to join kicked in, and the screen name Tuxedo_Oryx was "born." At first, I was concerned about jumping the gun, but later that name just grew onto me.
Turns out that Tuxedo_Oryx did correspond to certain aspects of myself. First, the gemsbok is one of my favorite antelope species. Its genus is Oryx (Oryx gazella), sometimes it's called an oryx. Second, both sexes of this species have straight, black horns. This trait seems to reflect my androgynous mannerisms, and choice of male roleplaying personas. Speaking of which, I sometimes like to pretend to be a gentleman. A tuxedo is one form of attire I would like to have. Finally, that screen name is both visually appealing, and rolls off the tongue.
Sorry for this luquacious response, but quite a bit was going on with that name...