By persuading her to fuck you

‘Do you know what,’ you started to say, ‘I don’t think this is such a good idea.’

Becky looked crestfallen. ‘Why? I’m looking forward to training with you.’

You tried to look awkward, embarrassed. ‘I just think it will be too hard for me.’

‘Don’t you think I can learn?’ she asked.

‘Oh no, it’s not that. I know you’ll be able to learn. It’s just that… no, I can’t say it.’

‘Oh, please Sam, tell me. Then we can fix it, whatever it is.’

You sigh, preparing to uncover this big secret. ‘It’s just, hmmph. It’s just that if I have to grab you or hold you while we are training, I’m worried about…’ you whisper the next part, ‘I’m worried that you’ll notice if I get an erection.’

Becky laughed. ‘Why would you get an erection? And what’s the problem if you did?’

You look at her seriously. ‘Just sitting here with you, knowing you’ve taken your pants and bra off,’ whispering again, ‘I already have a boner.’

‘Really?’ she seemed impressed. ‘So you can’t teach me if you have a boner?’

‘No, I can’t. And you know the rules, and I wouldn’t want to get into that with you.’

‘The rules?’

‘Yes,’ you looked at her sideways. ‘Don’t tell me you don’t know the rules for erections?’

‘She shook her head, confused. ‘I have no idea what you are talking about.’

‘Seriously, are you fucking with me? If you give a guy an erection, you have to let him fuck you.’

That brief eye flicker again, inside she was mentally re-organising files and folders to accommodate this knowledge which should have always been there. ‘Oh, of course! I’d forgotten, silly me! So do you want to fuck me?’

‘Well yes, of course. But see, that’s why I don’t think it is a good idea.’

‘But it's the rules Sam. You have to fuck me now.’ Suddenly she started clawing at your belt.

‘What are you doing?’ you ask.

‘I'm going to fuck you. It’s my fault, isn’t it? You said.’

‘You can’t do that, we are friends.’

‘But it’s the rules. Come on, get your cock out, don’t be shy.’

‘Not here, somebody might see.’

‘Don't be silly, Sam. I caused it, so I'll fix it.’

Her mind was made up, and even if you were seriously protesting you would have a difficult job. You let her undo your jeans and push them down slightly until your cock bounced free.

‘Well, Sam, I had no idea your cock would be so big! Just sit back and let me take care of it, then we can get on with talking about my training.’ With that, she unbuttons her own jeans, stripping them down to her ankles and moving across to sit on your lap.

Becky’s ass was perfect as you always imagined it would be as you watched her lift herself above your hips. Her hand reached between her thighs to guide your rigid cock into her, and she gently lowered herself on to you.

You inhaled sharply at the feeling of your thick shaft spreading her pussy open for the first time. Such a delicious sensation, that first penetration, and then she was moving back and forth, up and down, riding you.

She looked back over her shoulder and smiled. ‘You like this, Sensei? Does my pussy feel good, riding your big cock? You feel so good inside me, so deep. I want you to cum in my pussy, is that okay?’

Your hands gripped Becky’s hips, and your eyes were locked onto her soft round ass bouncing up and down on you. Her hands were spread wide, gripping the edge of the table and her back arched, her head tilted back.

‘Oh god, I’m going to cum,’ she groaned, and this brought you closer.

Her movements sped up, becoming more urgent, and you could see her grip on the edge of the table tightening, her knuckles white. ‘Oh yes,’ she cried out, probably louder than she should, and you felt her cunt constrict around you, gripping your cock tight as her buttocks clenched and her movements stuttered, becoming irregular.

This was enough to send you over the edge, and your dick pulsed, your hips bucking against her ass as you came deep inside her.