Ask Anna: How do I introduce my fetish to a vanilla partner?

Dear Anna, I’m a totally submissive boy! I bought a queening chair in ’08. It’s never been used and I want to introduce it to my vanilla girlfriend. But I’m freaked out! — Anonymous

                                 (He bought a Queening chair, 10 years ago and never used it?
                              My advice would be..."Man up, grow a pair, and pop the damn question".)  :)