Like you, I imagine myself in the role of this blonde wig-wearing sissy slut - the one whose mouth is being enthusiastically filled with that man's impressive, hard cock. But what most appeals to me is seeing three mature, consenting adults having sex together with each of the ones sharing their bodies with each other doing exactly what they want to be doing to and with each other - without any shame or reluctance.
I admit it, the moment both my holes were full, I knew this was how it was meant to be for me. My happy arousal for cock. I enjoy being a shared "cock whore," as you put it.