Two dominating muscular strangers

Your sister is laying on her bed, texting with her phone, not realizing the change of her surroundings yet. She is wearing pink shorts with white stripes and a top tank in a paler pink which only comes down to about an inch down her breasts and leaves the rest uncovered. As she sits up you can clearly see she is not wearing a bra.

As she's looking around trying to comprehend what's happening, two muscular guys walk into the room. You don't know who they are but you can see they're wearing matching black T-shirts with the letters "T.H.S.C.S" on them. "Does that stand for The Headquarters of the Secret Cuckold Society?" you wonder aloud. "precisely" the voice answers, "we have our own people, men who can dominate women and please them properly". You lean forward on your chair, and realize how anxious you are. The two strangers look really strong and ripped, and they're wearing sweat pants which does not hide their half flaccid-half hard cocks. "They're dicks must be huge", you think to yourself. "They are of course, very well-endowed" the voice says, as if reading your mind.

They stand by your sisters bed, one on her left and the other on her right. Christy looks at them, not scared or intimidated at all, rather playful, you can clearly see her grinning slightly. "Oh hi guys, how did you get in here?" Christy asks, "We have our ways baby" the first guy says, grinning and placing his big manly hand on her head. Christy chuckles and bites her lip at this. The second guy sits beside her on the bed, putting a hand on her lap.