Nothing

You decide to waffle. It's not a terrible strategy. Besides with Karen currently feeling your growing cock up against her straddling crotch and Katie watching with considerable interest, your brain can't exactly function anyway.

If you don't answer, maybe Karen will think you're thinking of something hot, and maybe Katie will think that you can't even come up with a response to the question. The latter of which is sort of true. Sure, there are things that you and Katie don't do in bed, but you don't really have many complaints. It's not like there's stuff that you wish she'd do but she's refused. Maybe there are things that you wish she'd do but you've never really had the guts to ask her. Of course first among those would be what's happening right now.

Karen starts to gyrate her hips, rubbing her body against yours, almost giving you a lap dance. And you sense she's growing weary waiting for your response. "Maybe I wasn't clear. I know there are dirty things you want to do that your girlfriend won't do for you because everyone has dirty things they want to do that their partner won't do for them. I'm going to say a word and I want it to really sink in, okay?"

You nod. You feel your body starting to tremble. You don't want to be a nervous wreck, but the pace at which this is escalating is almost too much to handle.

Karen leans in toward you and she gently clamps her teeth down on your ear. Her blonde hair falls in your face. She pulls on your ear and then whispers her word into it. "Anything."

You still don't answer. Suddenly you feel like you can't think of anything that would be naughty enough to satisfy Karen. Your mind races. You're in an impossible position - sexy but impossible.

Karen places her hand on your chest and quickly slides it down past your waist onto your hard cock. Another woman is grabbing your cock. Well... outside your pants. But still this is surreal. Katie is still watching.

And Karen keeps whispering. "What do you want to do to me? **** me? Gag me? Fuck my ass? Pull my hair? Slap me? Call me a slut? Tie me up? Piss on me? Make me eat your ass?" And you realize what Karen is doing. She's getting off on feeling your cock as it gets harder and harder as she makes suggestions that seem to make the whole room swirl around. "Or if you don't have any ideas. We can ask your pretty girlfriend over there? Should I repeat the list to her?"

You have no idea how Katie will react to hearing what you just heard. Then again this whole situation was her idea. You glance over at her. Her shirt is pulled up a little, revealing her navel, and her hand rubs at the flesh on her midriff as if she's trying to stop herself from shoving it down into her jeans.

Something has to give!