Sil told me that someone else asked her this question and my immediate response was "That's a dumb question"... Anyway, El and I think that "pooperonymous rex" is a really funny thing to call people. So, in the spirit of "sucks the casbah", please start to use this phrase in daily conversation. Especially when dealing with pooperonymouses.
Or "pooperonymous rexes"?
"Pooperonymous rexi"?