Who might that be?

You click on the thumbnail of a porn video on your favorite website, and the video starts playing.

It's a man, not an athletic one, but not fat either. What he does have is a huge cock, and he's burying it deep inside a woman's ass. The woman has her face pressed against the bed, so her face isn't visible. You can only see the top of her head, her beautiful wavy blond hair, a part of her back, and some nice, round, jiggly ass.

You watch the hung man fuck the woman anally. He's pounding really hard, and she's moaning so hard not even the mattress can muffle her screams of pleasure. You can see her body trembles in ecstasy.

"You love my cock, bitch? You like it when I stretch your ass?" The man says.

"Yes!! Yes, I love it!! Fuck me! Fill me, please!!" You hear her beg, and there's a little tone of familiarity.

You don't mind much, and jerk off. At first, you imagine you're fucking the blonde girl, but near your climax, you imagine you're watching the scene in person instead.

"I'm going to cum inside you, slut. I'll fill your ass."

"YEESSS!! PLEASE!! HARDER!! GIMME... CUM!!" She's evidently orgasming as well. He cum, grunting, and you can even see the semen leaking from her ass: he had cum buckets. "Good slut."

Then he lifts her head and you see her. It's a beautiful woman, one you know.

It's your wife.

You cum harder than ever.