Her ass.

'Please, I'm a virgin!' Julie cried.

'Make a decision or I'll make it for you.' Mark threatened.

Julie though fast. She couldn't let him fuck her she just couldn't, but the other option, though. It would hurt, but she technically could still claim she was innocent.

'My ass.' Julie said, defeated. 'You can fuck my ass.'

'Good girl,' Mark told her. 'I was hoping you'd make that choice.' He spat on his hand and rubbed it along his cock, lubing it up. When he was satisfied with it's slickness, he pressed its head against Julie's brown hole. There was a moment of resistance before her anus dilated and he popped inside.

'Aieee!' Julie cried sharply.

'Be quiet!' Mark growled. 'If you don't fight it, it won't hurt so much. You may even enjoy it.' He then concentrated on reaming Julie's ass. Slowly at first, but with ever-increasing speed, making Julie's tits sway back and forth. As he neared his climax. He noticed Julie was still whimpering before him, but no longer in pain. Her cries were almost pleading. She clawed at the bed, her face slack with need.

'See? I told you you'd like it.' Mark gasped. 'Do you want me to let you cum, Julie? I will if you beg me.'