Lori got her forefinger wet with precum and started touching my asshole while my cock rubbed her wrist and forearm. It felt weird but exciting. I figured she knew what she wanted so I wasn't going to interfere. She occasionally leaned forward and licked at my cockhead so I figured it was all good. If she had some weird wish to stick her finger up my ass, that was her kink. I was gonna cum, probably in her mouth or on her face and that was good enough for me. 

I should mention that Lori's ex boyfriend was in the next room and that part of her motivation was probably to make so much noise with me that he regretted breaking up with her. Whatever. His loss. 

When her finger went in me I felt really strange, like I was shitting. But my cock was still being rubbed and she would sometimes touch my nipples and lips with her pussy soaked fingers. So I was cool with it. Do whatever you want with me, I thought, just make me cum.