I fuck Millie in the ass

I slide my dick out of Millie's pussy, and then I stand up. Millie just lays there for a few seconds, then she gets into the doggy style position in front of me. She sucks on one of her fingers, rubs it against her ass, pushes it in, takes it out, sucks on it again, then pushes it into her ass again.

I stand behind my step-mom watching in amazement as she fingers her ass in front of me. After a few more seconds of fingering her ass, Millie seems satisfied that she has lubed herself up sufficiently, so she looks at me over her shoulder and nods.

I look down at my step-mom's ass, glistening with saliva, then look at my dick, which is very wet from Millie's pussy juice, so I take my dick with one hand and push it against Millie's sphincter, which instantly gives way, allowing my dick into her ass.

Millie's body tenses as my dick invades her ass, but I keep pushing until I am all the way in, then I pull back a bit, then again impale Millie anally with my cock.

As I thrust in and out of her ass, Millie screams out. I am not sure if it is from pleasure, pain, or both, but at this point I am too horny to care, so I just thrust my cock in and out of her ass.

Millie's screams are starting to get louder now, I am giving it to her ass really hard now, and am close to cuming when Millie screams:

"Fuck my ass Matt!"

This brings me over the edge, and I pump my step-mom's rump full of my cum.