Simple.....but maybe not 'afterplay'....
After I cum in her, I go down on her. She orgasms like crazy, when I do, it makes me hard again, and we can go at it again, only this time, I can last longer.
I cum in her again....sometimes she cums too, but no matter....I go down on her one more time to make sure she cums, or give her another one.
And....I'm hard again, so the third time....I can go at it, and no doubt she will cum by PIV only. But....I usually will eat her and give her one more after!
Wet & messy....but orgasms abound, and that's the idea no?