Start with some dirty talk

"Tell him how much you like his cock." She says, clearly knowing she's starting off slow, and working toward something. Katie isn't much of a dirty talker, but she can get into it occasionally.

Still, you're learning to forget whatever it is that you consider normal in your sex life and just accept that this is the moment in which you find yourself.

"I do like his cock" Nikki says, staring at it lustfully. "It's really nice. It's a good size. It's a good shape." She tugs on it over and over as she compliments it. "To think all this time you had this hiding in your pants."

You're so focused on Nikki's expression of lust, her lips praising your dick, that you barely have time to take in the amazingness of her body on display for you.

"Now tell him..." Katie goes on.

"No" Nikki interrupts. "You dared and I did. Lose the shirt."

Katie nods and pulls her purple shirt off over her head, still trying to hold up her phone. She's wearing a very nice lacy black bra. No doubt she expected you to see it tonight. She probably didn't expect your cousin to.

You look over at Katie in her bra. Then back at Nikki, really taking in her pale flesh, her tattoos, her nipples, you didn't even notice before that they were both pierced. You shake your head.

"Now tell him that you came here today to suck it." Katie says intently.

"Well..." Nikki's eyes look up and find yours. "I could lie to you as ordered and say that I showed up with every intention of seducing you and getting my lips wrapped around this very impressive prick. Or I could tell the truth and say that I didn't, but now that fate has brought me to this moment I'm certain that the reason I came here today was to suck your cock."

Your cock throbs. This is insane. You're listening to your cousin Nikki say these words, ordered by your girlfriend. Trying to act cool and just go with it has never been harder.

"Lose the pants" Nikki says without even so much as looking at Kate. And while Katie is unzipping her jeans and pulling them off, Nikki leans in and licks the underside of your shaft from bottom to top. The sensation of her wet tongue on your flesh is amazing.

"Hey!" Katie says "I didn't tell you to do that."

"Well, the point of the game is not that I only do what you say. I can do other stuff too if I want. Unless you dare me not to suck his cock."

"Okay" Katie suddenly says, perhaps feeling a little left out or a little outgamed. "I dare you not to."

You look over at your girlfriend. What is she doing to you? Nikki's tongue was just on you. And now she's putting a stop to it. The look on your face is plain.

"Relax" Katie says. "Have I ever let you down?"

She hasn't. She hasn't in bed. She hasn't as a girlfriend. And considering how quickly she's agreed to this strange scene, she hasn't tonight.

"Okay. Don't let him down." Nikki says, unwrapping her hand from your johnson. "Don't let him down." She teases. "You can pull down those panties. I'm accepting your dare and not sucking his cock. But you'd better not let him down. C'mon.... c'mon... c'mon...."

Katie is totally overwhelmed by the moment. This round clearly goes to Nikki. Katie pulls down her underwear, revealing her bald, wet pussy. And she puts down her phone now. She can't concentrate enough to record. Now she's clad only in her frilly bra, staring at you, as Nikki repeats.

"Don't let him down. You'd better not let him down. Give me my next dare. Don't let him down."