Feeling slightly sorry for him, Claire zipped him up and emerged, still naked, from under the desk before replying, “Oh that’s OK. How about I try again later? We’ve got until next week, haven’t we, to get it right? I really want to do this perfectly.”
Mr. Forsythe held one of her hands in his and patted it affectionately. “That really would be most satisfactory, my dear.”
Over the rest of the week, Claire practised collecting Mr. Forsythe’s spunk three times a day, first thing in the morning, after lunch and at just before she left for the evening. It took a few goes before she was timing his orgasm well enough to get most of his cum straight into the test tube. It took around forty minutes from start to finish, just using her mouth and hands to the best of her ability when she was under the desk. However when she persuaded him to defer his marking until after she had finished so that she could do it in the open office, with her big green eyes and enormous plump tits visible, she was able to shave off a good ten minutes.
And when without thinking, she had guided his hands to fondle and tweak her enormous red-nippled boobs, he had came in around twenty-five minutes. From then on, she always made sure he was playing with her tits during her collection practise.
On the day of the big lesson, things went perfectly. Half an hour before the lesson was due to begin, Claire stripped off her top and bra and knelt down between Mr. Forsythe’s legs. Exactly twenty-seven minutes later, he came in her mouth while pulling firmly on her nipples but Claire was quick enough to get most of his spunk into the test tube.
When the boys came in, each had a glass slide with semen smeared onto, ready for examination under the microscope.
The lesson went well, although she had to ignore the boys more than once when they asked where the sperm had come from.
At the end of the lesson, Claire was clearing up when she noticed Charles had stayed behind to talk to Mr. Forsythe in a rather excited manner. Although she couldn’t hear what he was saying, she didn’t think it odd they were after all related as well as being teacher and pupil. As she approached the office, Charles left, giving her big smirk as he walked past.
Later that afternoon, Mr. Forsythe seemed a little agitated.
“Are you OK, Edward?” Claire asked in concern.
“Oh, yes, I’m fine really. It’s just that I have experienced an unfortunate physiological response,” he gestured to his crotch. “As you can see I have an erection. I think this might be because for the past week you have been collecting semen from me like clockwork at this time each day. In short, my body is responding to the routine we’ve developed. And of course, having missed the usual post-lunch session has exacerbated the situation.”
“Oh, dear,” Claire said sympathetically. She had an idea. “Well perhaps I can just go ahead as usual. Will we be looking at sperm another time?”
“Well, yes, next term with the fifth form.”
“Oh great.” Claire clapped her hands girlishly. “I can stay in practice as well as helping you feel better. Go on, Mr. Forsythe, please let me,” she pleaded.
“Well, I suppose, it does make sense,” he agreed.
Pleased at her own initiative, Claire smiled as she stripped to the waist and got down on her knees.
Almost half an hour later, Claire realised she had forgotten the test tube. She decided to keep going, hoping that Mr. Forsythe wouldn’t notice and indeed all he did after filling her mouth with copious amounts of spunk was to sigh heavily before zipping himself up and thanking her. Claire swallowed secretly and smiled to herself at his absentmindedness.
The next morning, after another early blowjob, Mr. Forsythe sat Claire down to talk to her. “Claire, in today’s lesson with the sixth form, as part of our studies of the reproductive system, we will be covering Sexual Education,” he intoned.
“But don’t all students need to learn about it? Not just Biology ones, I mean,” Claire asked in a puzzled tone.
Mr. Forsythe coughed. “Well, er, yes, that’s quite right and they’ll have done so a few years ago. But as part of the advanced syllabus, these students need to have a thorough and practical understanding. After all they might go on to be medical students for instance and so need to understand all about sex.”
“Oh, of course. That makes a lot of sense, really,” Claire replied.
“Now I must ask you to remain completely professional in the lesson. As you can imagine the boys will find it a bit embarrassing to discuss. None of them, as far as I know, have had a girlfriend so they will feel a bit uncomfortable.”
Claire had no doubt that none of the boys had ever had girlfriends they were all somewhat geeky and unattractive. She listened as he continued.
“However as professionals, you and I must be very matter-of-fact and take it all in our strides.”
“Oh, of course, Mr. Forsythe. Thanks so much for letting me help you with this.”
“The pleasure is all mine, my dear,” he smiled.
The lesson was scheduled for the whole afternoon after lunch. When Claire and Mr. Forsythe returned to their office a quarter of an hour before it was due to start, she knelt down in front of him without a word, ready to service him with her mouth almost automatically.
But Mr. Forsythe stopped her. “Actually, Claire. I’ve got an idea. I was going to run through different types of sexual interaction with the boys including oral, vaginal and even anal. Why don’t we give them a practical demonstration of oral sex?” he suggested in his kind manner.
“Erm. You want me to suck you off in front of the boys?” Claire asked unsurely.
“Well, of course what you’re actually doing is practising harvesting my sperm. I admit, however, that to the untrained observer it is very similar to fellatio and so it would be an excellent way of killing two birds with one stone, as it were.”
“Oh, well. If you think it’s important to their learning then OK. I’m just a bit worried in case they tell anyone though and they get the wrong impression,” Claire said.
“I can assure you that they wouldn’t do so. I have already had a talk with them individually about some of the more, um, sensitive subjects we have covered and they fully understand that if they are in any way indiscreet, they would lose the privilege of any continued practical learning.”
“Oh, thanks, Mr. Forsythe, I mean, Edward. It’s just that my boyfriend isn’t in very familiar with teaching methods so he I don’t think he’d really understand. I wouldn’t want him to find out.”
“No fear of that, my dear,” Mr. Forsythe said as he patted her hand.
The first hour of the lesson consisted of Mr. Forsythe instructing the boys on how important it was to practise sex safely. Claire noticed that they boys kept glancing up at her however instead of paying attention to his admittedly soporific toned lecturing. Charles made her feel uncomfortable with his knowing hungry gaze while Michael looked at her as if she were the subject of some sort of experiment. She began to regret wearing a clingy black top, a tight red short skirt, stockings and heels that she knew showed off her figure extremely well.