Dominator takes the bait.

Lisa felt her Bro bottom out inside her and pause as he thought over her words. Lisa could almost feel the thoughts running through his, um, head. Well, one of his heads, but that was the head she was trying to manipulate. And if she had trouble stringing together coherent thoughts while his cock was inside her, it had to be at least as difficult for him, right? That was, she tried to explain to her sisters earlier, why she was so eager to hop in bed with DKM again. Bros just couldn’t think straight when their cocks were occupied.

The so-called Dominator began to move again, slowly, eliciting a shudder from Lisa. After getting back into rhythm, the frat boy spoke. “You and your sisters can just stay in the DKM house for the rest of the week. After all, you're all DKM property, now.” He leaned down, his powerful chest against her arched back, and whispered the next bit directly into her ear, “And that way, when you get hungry for more DKM cock, you only have to walk five feet, instead of five minutes.” He moved back up, pulled said cock out of Lisa, and flipped her over onto her back before reinserting himself and falling back into the same rhythm.

Lisa was a bit rattled by the sensation, the thought of future DKM cock, and the sudden change of position, but after squealing out a fourth orgasm, this one loud enough that her sisters down the hall definitely heard her, she pulled herself together and got back on track. “That’s not what we agreed. The bet was one race, one fuck.” She gasped as the Bro leaned over her, not losing pace, but close enough to her face now that he took up her entire field of vision. “We only came by this morning out of pity, since you and your, unf, douche bros probably won’t get laid again all week. Oh!” Dominator gave her a grin and unleashed a series of hard, deep thrusts. “No, the reason you came by this morning is because you and your sisters are already addicted to DKM cock. I’m just offering you a chance to enjoy your vacation and get what you want out of it.”

Lisa’s eyes fluttered open and shut as she reveled in the sensations her DKM owner’s cock was sending through her. “Maybe we can compro- Oh! Compromise. Another challenge. You win, we spend the rest of our vacation here at DKM house, trophy sluts to use as you please.” Lisa orgasmed again as an image floated into her mind. She and her sisters, lined up, naked, and all bent over taking DKM cock in the cluttered living room they had passed on the way in. The Bro didn’t break for her orgasm, plowing through with the same cocky grin. “And on the off chance you sluts manage to win, what? You just leave?”

“N-no. If we win, you admit defeat in front of the entire beach, and we’re free to enjoy the rest of our vacation without DKM trying to get back in our pants.” The bro raised an eyebrow. “As if you’d be able to stay away. Whatever. Deal.” He gave two final thrusts, and Lisa had a final, screaming orgasm as she was filled with DKM cum once again. The bro pulled out of her after he finished. “Clearly you didn’t take my lessons to heart yesterday. After DKM beats you and your sisters again, you’re going back face-down ass-up, and we’ll see if drilling your ass instead of your pussy helps.” Lisa was too exhausted to argue, or to resist when he directed her to clean his cock off with her mouth. After she finished, she pulled away and got dressed again.

“Whatever. Have you and your bros meet us on the beach at 3 o'clock. We’ll see who beats who.”