Okay, first thing: once people scroll past your header, you have nothing. Put ads in between each post. Something, anything. BangBros has some good stuff for you. Get some cams banners with fat black chicks (are they fat?) Whatever.
Here's a very simple PHP ad rotator:
PHPBuddy.com - Simple Ad Rotator
It works great for simple rotations.
Want to get an idea of what works with your niche:
Adult Webmaster Program Stats
Green Guy's stats are pretty amazing. He tracks everything.
Try PimpRoll. I think they have some sites that will make your readers happy.