I’ve got 2, one as the penetrator and one as a bottom.
The penetrator:
I am the Sheik of a Harem and I have women and (passable) trans-women of all shapes, sizes, and colors who’s only purpose in life is to submit to my anal fetishes. I get to examine, smell, taste, and fuck their anuses whenever I choose and in any position.
The Bottom:
I had this gay guy who mentored me when I was a student learning the ropes of my profession. He was older; in his 50s but took great care of himself and was bigger, stronger, and smarter than I was, and I was in my 20s. He took a liking to me because I wasn’t afraid to have conversations with him and we got along great. When my schooling was done, he gave me his phone number so we could hang out. We never did though, and had a falling out due to a misunderstanding. This is all true up to this point, now for the fantasy that has developed over the years (15 years later): I reconnect with him after all these years, go to his apartment, have a drink and listen to his music collection, then he convinces me to let him top me, but on MY terms. I have no desire for men, but I want to feel a real penis up my ass, so I tell him my conditions; no kissing, hugging, or oral sex (giving or receiving), just lay me prone or on my hands and knees, and have his way with my ass. Then we have intense sweaty anal sex in his bedroom, followed by a drink, then I wash up and leave.