I heard about this some time ago, when the female chimps started putting out for meat some male chimps took control of them for their meat. Chimp Pimps.

“I think what they are doing is having copulation for another reason and just taking the stones as well. We don’t know exactly why, but they are using the males.”

"There’s betrayal, role reversal, and debauchery, but in the end everyone gets a meal and some love."

Yea, that sounds about right.