Jen

Josh beats Jen.

"Holy..." Josh started.

"...shit," Jen finished. The twins looked at each other in visible shock. "Josh, I... We can't..."

"What's wrong?" Tonya asked with an evil grin. "You know if you chicken out, you lose, right?" Tonya knew she had beaten Jen. There was no way she'd go as far as fucking her own brother!

"Wait!" Josh said in protest. "I just fucked you. It'll be a few minutes before I can go again."

"We'll wait. Right guys?" The glare that Tonya gave Terry and Geo made them agree with her.

"What are we going to do? You're my sister for Christ's sake!"

Jen was quiet for a couple minutes. "You've masturbated to me before, haven't you?"

Josh turned away from here. "You're my sister..."

"Be honest. Growing up, I know you've stared at my tits and tried to see me naked. I'll be honest. If I had known you had such a big cock, we would have had this conversation sooner."

"What do you mean?"

"We're both attractive people. If we weren't related, I'd totally fuck you."

"Really? Okay, fine. I've...jacked off thinking of you before."

Jen reached over and started stroking his cock that was already starting to get hard. "Oh yeah? I bet you've wanted to get your hands on my big tits for a long time now."

Josh looked at his sister openly. "Yeah, I have..."

"And my room is right next to yours. You heard all the times I snuck guys into my room, didn't you?"

"Yeah..."

Jen's hands moved faster and Josh was fully hard now. "You heard them fucking me and you wanted to come in there and have a turn, didn't you?"

"Y-yeah..."

Jen then straddled him. "Well then, 'Big' Brother, tonight's your chance!" She placed the head of his cock against her entrance and slowly lowered herself onto his cock. Everyone gasped out of shock but Jen wasn't paying attention to the others. Her brother's cock was balls deep in her cunt and it felt...perfect. His 10-inch cock filled her completely. It was like his cock was made for her cunt.

As for Josh, he was in shock himself. He was balls deep in his sister's cunt and it was squeezing him. While Tonya's virgin cunt was tighter, Jen's fit like a glove. And those huge tits were right in his face, so he grabbed and squeezed them, causing Jen to moan.

Then, Jen started to move. She rode him slow at first but quickly picked up speed. His big cock felt so good inside her that she couldn't hold back. And Josh squeezing and sucking on her tits just made it even better.

Jen rode his cock wildly, her moans getting louder and louder until she arched her back and came loudly with him balls deep inside her. If Josh hadn't recently cum, he would have cum inside her. As she came down from her orgasm, she realized that it would be best to finish Josh off with her mouth. But before she could get off of him, he picked her up and laid her on the couch with him on top of her and his cock still inside her. Instinctively, she wrapped her legs around him and he started to fuck her fast and hard! This was exactly how Jen loved to be fucked! It wasn't long before she came, again, but Josh didn't stop pounding away at her.

"Oh fuck! Fuck me, Josh! Oh fuck, fuck, FUCK!" This went on for awhile. Then, Jen came for a third time. This time was too much for Josh and with a loud groan, he came deep inside her.

For a moment, they lay there together. "Oh wow," Josh said. "I can't believe we just did that!"

"I can't believe we hadn't done that be-- Wait a minute. Josh, did you cum inside me?"

"Yeah..."

She pushed him off of her. "Goddamnit! You know you shouldn't have!"

"Sorry, I couldn't help it." She sat there pretending to be more mad than she actually was. That whole experience was incredible. As wrong as it was, it just felt right! She knew they had opened a very dangerous door but didn't think she wanted to close it.