She's not being cruel. She has a smile on her face after she utters those words because she knows how much it thrills you to hear them. She sees your hand move towards your crotch. She knows that she's enflamed your desire.
"Does that turn you on?" your wife asks as she moves to the far end of the couch, turns towards you, and spreads her legs. "Do you like hearing that your wife prefers fucking someone who's more of a man than you are?"
You nod.
She slips a hand into her panties and you see her fingers moving over her clit. She stares into your eyes, smiles, and then unleashes a low moan. "It's nice to be with a man that can make a decision without asking me if it's okay. It's nice to be with a man that's willing to take charge in the bedroom, not one that needs me to make every little decision about what position we're going to use. Hell, it's nice to be with a man that feels like it's his right to have his cock sucked by the woman he's fucking instead of a man that acts like his wife must find it a horrible inconvenience to blow him."
"You've said that you don't like going down on me," you reply.
She laughs. "You're right. I don't. Because I only like sucking a real man's cock. I don't like sucking your cock."
"Can I..." you begin to ask before cutting yourself off.
"Were you going to ask if you could masturbate?" she replies. "Is that what you were going to do? Were going to ask permission to pull out your cock and stroke while I tell you how much I enjoy fucking a real man?"
You nod.
"Then no," she says. "You can't. Keep your fucking dick in your pants. If you're so weak that you feel the need to ask permission, then I'm not going to give it to you."
You feel like she's challenging you to do what you want, but you can't help but want to do what she tells you to do, so you keep your cock in your pants.
"If I was with him, if I was on his couch, his cock would already be in my mouth," she says. "I'd be on my hands and knees next to him. My head would be bobbing up and down in his lap. He'd have my skirt up around my waist and panties around my knees. He'd be fingering my tight, wet cunt while I sucked his cock. He'd have me soaked. He'd tell me my mouth felt so fucking good. He'd tell me he was going to pound me hard, to pound me so hard that I forgot my husband even existed. Then I'd moan around his cock. I'd moan because I was so fucking turned on. I'd moan because I was so desperate for him to do exactly as he said he would do."
You lean forward and move to crawl between your wife's legs, but she lifts up her foot and holds it in front of your face, blocking your path.
"Where do you think you're going?" she asks.
"I want to go down on you," you reply.
"I'm not sure you deserve to taste my pussy," your wife says with a smile. "I think you should have to earn that pleasure."
"I'll do anything," you say.
She laughs. "He really is more of a man than you are. That's okay, though. I can still have plenty of fun with you. Why don't you suck on my big toe while I decide if you're worthy of tasting my pussy."
You reach up and hold her foot in your hand while wrapping your lips around her big toe. You suck. You run your tongue over it. She moans and masturbates and you hope that she'll grant you permission to take your place between her legs and lick her pussy, for it would bring you such pleasure to make her cum.
"I wonder what you would look like with a dick in your mouth," she says before laughing at the panic in your eyes. "Don't worry, baby. I'm just talking out loud. I wouldn't make you suck cock for me." She pauses for a moment and then adds, "Or would I?"
She pushes her toe deeper into your mouth and you take it as an unexpected, kink-fueled kind of arousal washes over you.
"I'll bet you wouldn't stop me," she says. "I'll bet you'd just do it. That's the kind of man you are. Your wife tells you to suck cock and you get on your knees and do it."
Her fingers are moving furiously in her panties now. You can hear the wetness of her pussy. You hope she's not serious about making you suck cock, and yet for some reason you're not nearly as scared of it as you probably should be.
She pulls her toe from your mouth, spreads her legs, and moves her panties aside. "Eat me," she says.
You crawl between her legs, drop onto your stomach on the couch, and lick her clit. She puts a hand on the back of your head, smiles, and moans.
"That feels good, baby," she says. "And god damn is it hot to think about you sucking a real man's cock. Why the fuck is that so hot? Why the fuck would I want to see my husband sucking dick for me?"
You don't answer. There's no answer to that question. You just keep licking her pussy.
"Would you do it for me?" she asks. "Would you suck dick for me if it's what I really wanted?"
She wants an answer. You look up at her. You nod.
She closes her eyes and puts a hand on the back of your head. She pulls you a little closer, smothering your face with her slick pussy. "I knew you would," she said. "I'm going to make you suck dick. Oh, fuck, I'm going to make you suck dick for me. I'm going to make you into my little cocksucker."
She cums a moment later. Juices leak from her pussy as her moans fill the living room. You have no idea if she's actually going to make you suck dick or if she was just pursuing her orgasm, but you know that you'd do it if she really wanted you to. You can't help but want to make her happy.