Yes. I have fantasies of taking care of female relatives and then using them as sex toys.
I'll give a scenario: You are 30yo man with a good well-paying job. You meet a pretty young girl, maybe 20, who lives with her mom, maybe 50. Mom and daughter are struggling and are homeless or near to it. You work your charm on her, and she falls for you because you sound like the savior for her. Problem is that you are sexual deviant and you use the women for your pleasure. You have sex with both of them, and sometimes at the same time. I like the awkward theme here where the woman is forced to get naked and have sex in front of (or with) her mother and daughter.
Let's see the opposite with femdom: Imagine that you're a boy with a huge cock. Not only you are forced to please your mom and sisters, but also you have to please your aunts, cousins and grandmas (on both sides). Also, (If you don't like incest) maybe you're a some girl's boyfriend and she tosses you around with her family.