Sure thing they are. Heck, even rope isn’t really mandatory, only intent. These GIFs are from searches involving "nude," "kneeling," and "slaves."
At the time I first posted the first GIF below I wondered if the young lady’s distended throat was CGI.
Turns out it’s not.
I realize that a large erection visibly displacing a woman’s larynx is a turn on for many, and the floor is open for other examples. But these are the last ones I myself will post.
Now I understand the term throat fucking.
I have found a new hero!Jeff Bridges . . .
Hmmm.
Can’t decide whether these are stills from his upcoming movie or candid shots of him relaxing at home.
Once more, no bonds except power imbalances. Keyword, "office."
If I went in my bosses office and did that do you think I would get a raise in salary?