Yes. Yes they are.

'We'll do it,' John spoke, hoping he didn't sound too eager, or eager at all. 'We'll do it, doctor.'

'Okay,' Doctor Harper said. 'Then, please, go ahead, and pretend like I'm not even here.'

John nodded and looked back at Louise. Her face had changed from her bratty, determined to win expression, to one of anger and deceit. 'We'll do it?' she said, leaning on his shoulder to whisper into his ear again. 'Are you serious? You know what she's asking, don't you?'

Even the tone in her voice had changed from excited to best her big brother to fear. 'It's okay, Louise,' he said, trying to ignore the smell of her hair. 'Look, we've already come too far to suddenly refuse now, without being suspicious. Let's just get this over with, then we can leave, and pretend like this never happened.'

Louise leaned back to look him in the eye, her face full of sudden understanding. 'Oooh, okay, John, I see now.'

'What?'

'I get it. I get what's happening here.' She leaned back to his ear, and finally placed her hand back on his erect shaft. 'You, my sick, disgusting, big brother, are enjoying this.'

'What?' John replied, trying to sound as disgusted as he should. 'That's insane, Louise. You're my... my little sister,' he said, catching his breath as she began to pump her little hand up and down his shaft, slowly. 'I'm not enjoying this any more than you are.'

'Oh, really?' she said, her breath gracefully hitting the skin on his neck. 'Admit it. This is why you asked me to drive you. This is why you told me to come in with you. Why you said we were 'together'. You really are sick.'

Despite her cursing, her voice suggested she wasn't as disgusted at the idea. 'You're wrong, Louise. You're...' he trailed off as she leaned back, looking him in the eye. His glance quickly moved down her body, wondering how gorgeous her naked body would look beneath the layers of clothes she wore, the small mounds on her chest, her smooth, pale skin...

'John,' she began, bringing his attention back up to her. There was no doubt she'd seen him check her out this time. 'This is pathetic, really. Just admit it, save us both the bullshit.' He looked down to watch her hand pumping progressively faster and faster along his member, his head coated in precum. 'Tell you what, John. You tell me the truth, that you find your little sister attractive, that you're enjoying me jerking you off, and that you want me to make you cum. You admit it, and I'll let you touch me.'

He looked back into her eyes, and a wave of pleasure flowed through him as she winked again, though this time with much more sincerity.