Demand an explanation

With Megan safely out of the room, I throw the blanket off of Sam. "What were you thinking? Why did you do that?"

Sam is just smiling up at me, my semi turgid cock in her hand, still glistening from recent attention from her mouth. "What{if Sam's hand = true}{else}? Meg had gotten your cock all nice and hard. And after seeing you pleasuring yourself earlier today, I just couldn't let the opportunity go to waste, I had to have a taste.{endif}"

"But.. we could have been caught."

"But we weren't, and we won't be next time either."

"Next time? There can't be a next time, Meg...." I try to protest but Sam stops me by giving my balls a little squeeze and slurping the head of cock into her mouth.

She pops my cock out of her mouth and smiles, at me, "There will be a next time, or I will have to tell my sister about how you pulled your cock out and made advances on me this morning."

I just silently open my mouth, not sure what to say.

Sam stands up giving my balls a parting squeeze. "I'll give these guys a chance to reload, but be ready for some more fun later, I'd hate to have to upset my a sister with the dirty truth about her husband." With that she turns and leaves the room.