It's enjoyable to think of our mature wives fucking guys half their age (or younger!).
A favorite is my wife being groggy from drinking alcohol or a sleeping aid, sleeping in a t-shirt and panties. 2 boys enter her bedroom, and after positioning themselves, one starts removing her shirt as the other takes her panties off. She wants to resist, but is powerless.
The best part is when they find out how wet her pussy gets from stimulation, they can't keep their cocks or fingers out of it. It blows their minds when she squirts all over them when she cums, and they take turns cumming in her pussy.
If she was going to fuck multiple young guys, I like to think of 3-4 taking turns on her all night long, but only 1 at a time.
When she absolutely has to take a break, she can thrown on a gown or robe and be with them all, perhaps in the living room or kitchen. They eventually move in and surround her, and begin fondling and groping her body, but she leads whichever one into the bedroom for actual sex.