I'm not a woman obviously but I've experienced a lot of anal sex with men and "YES", I can feel every movement of his cock inside my ass, even his load of cum ejaculating inside me.
Not a woman, but yes i love the feel of the pulsations of a guy when he ejaculates in me. I know that with each contraction there is a hot ribbon of creamy cum being pumped.
I certainly can feel it & love the feeling of hubby's pulsating cock in me & then when he cums just totally amazing
Yes I can certainly feel when he gets off in my ass. I waited more than 20 years as an adult before allowing him to fuck my ass and I didn't know what I was missing. I love to feel it throb in my mouth especially, but wherever, I always love to feel when he starts getting off. If I haven't orgasmed yet (or very recently), feeling him cum in me will get me there every time.
I should have added above that I feel it even more when we're face to face as he pumps cum in my ass, rather than behind me.
Even with my limited experience, I have to agree--it's best on my back, when I can grab his ass and pull him in deep.
The one friend who I take in her ass says yes, she feels me spasm and spurt but she also feels me getting close so she knows I'll be releasing back there soon. She can feel me get fatter in her mouth when she sucks me off. Less so in her pussy but definitely in her ass. Takes a while to get it in there but she's a sqirmer and wiggler when the fucking starts for real. She doesn't squirm around like that normally....only when she takes it in her bottom.