There's a thread in the premium membership only section (find on first page) that is called the usertitle thread or something like that.
Post in there what you want your usertitle to be and an Admin will get get it done.
“Anna, my strong, terrifying Anna.” -Cas
"You lack the testicular fortitude to study under me" -Elodin
“slow and drunk is no match for fast and scared shitless.”-Jacob