So it was that time of the year again as eldest brother Max celebrated his birthday. This year though he knew it was going to be so very different as things had changed so much in the past year and like so many boys of his age a growth spurt had transformed him from a small boy into a young man. Not so long ago he had still just been a boy, but now he was grown up he knew that he would have a more difficult situation with his younger brother Liam. Liam himself was starting to ask questions about sex and girls as school sex education had raised so many more questions. This being the 1970’s neither boy could turn to the internet and innocence was much easier to maintain.

Anyway as the two boys had done every year on Max’s birthday today was the day when they would be measuring their progress in the trouser department.

With their parents both out getting his birthday present they met in the main bathroom at their home as they did on this annual event. Max brought along the previous results but he knew that it was not just a case of a bit of growth here or there but also the fact that his equipment was now fully functional and that he had discovered the joy of teenage masturbation that was going to be such a change. Liam too had noticed that his brother now better filled the front of his school trousers more like some of the older boys and also was aware that he had a couple of downy hairs at the base of his penis, a bit like his brother had showed off last year and about which he was so proud as he was one of the first in his class to have gotten some.

Liam was very proud of his slight advantage at the same age albeit that he was always 6 months into his particular year.

Being an even birth year it would be Liam to be first up for the measurement. He took down his shorts and boxers and quickly pointed out to Max that he had a few hairs starting to show. Max congratulated him and in time honoured fashion got out his Mothers sowing tape and measured along the soft length of his brother’s cock. “Well bro it looks like you have grown again at 5.7 cm (2.2″) although it is still no fatter than your little finger! Do you agree on the result?”. “Sure do and I still am ahead of yours from the same age!”

Now it was the time to get the hard measurement and as ever it was a page from a soft porn magazine that they always kept that was used to get things moving. In addition Max now realised how good things felt with a bit of hand and finger stimulation and for the first time he offered to help his brother along.

” Have you heard about wanking in school yet?” he enquired of Liam.

Not wishing to embarrass himself Liam answered in the affirmative. He had heard the word but was not 100% sure what it was all about.

“Let me show you” offered Max and with that he gently put a couple of fingers on his young siblings cock. “Whoa, what are you doing?” exclaimed Liam. “Just trying to help..you will thank me for it soon enough but if you are not happy then let me know” replied Max.

“Its ok” said Liam ” just be gentle please”.

With that Max cradled and fondled his brothers cute little member and surely but not so slowly it stood to attention.

“Wow” exclaimed Liam “that sure is a neat way to get a stiffy. Really felt good to have it touched by someone else. Thanks”

Max again got the tape measure and along the top of his brothers now twitching cock they agreed on a new number for Liam of 8.1 cm (3.2″) plus noting some first hairs.

Now it was Max’s turn and for the first time ever Liam noticed that his brother was a bit hesitant.

“What’s the matter?” he enquired ” are you worried about how I am catching you up?”

“In your dreams bro” responded Max “it is just that I am not sure how appropriate this will be now things have changed so much”.

“What do you mean, changed? We have always agreed to do this. I hope you are not chickening out?” asked Liam.

” Not going to chicken out but what I will now show you has to be kept more secret than ever. Is that a deal?”

” Of course it is, although I am not sure what is so different”.

Max took off his tshirt and right away Liam noticed that Max had some fine hair from his belly button to the top of his shorts. Also when he removed his tshirt for the first time he noticed that his armpits had hair. As he stood there with his still erect boy penis he decided to touch his own cock as his brother had shown him and it felt good. His brother removed his shorts and then asked his younger brother if everything was ok and Liam nodded.

Slowly Max slid down his shorts and right away Liam noticed how much hair his brother now had. Then came the top of Max’s cock where it was attached to his body and it looked three times as thick as before. After what seemed like an age and inch by inch the head of Max’s cock was revealed. His foreskin was two thirds back and his bell end looked like a large mushroom. To Liam’s eyes his brother’s grown up cock looked huge as it dangled in front of him and not only that but he also had two reddened ball sacks hanging down which contained two orbs the size of a couple of golf balls. It scared him and excited him at the same time as he realised that he too would be as equipped in the not too distant future.

“You ok?” Max enquired. “Let’s measure before I get hard”. And so they measured and agreed at 11.2 cm (4.4″) a really big change. His new found thickness was also noted together with so much hair.

” Do you want me to help you get hard as you did for me?” Liam asked as he really wanted to know what such a grown up cock felt like compared to his own.

“Feel free” replied Max “but I must warn you that if I get hard I might have to finish things off”. Liam had no idea what was meant by this but leant forward and cradled his big brothers rapidly stiffening member. It felt quite heavy and then Max also asked him to cradle his balls and Liam was impressed by their weight before they started to tighten up as Max’s cock reared up. For a young boy the first glimpse of a grown penis was a real shock. Precum started to form at the slot of his brother’s cock and his foreskin slipped back over the swollen purple head.

“Is that pee coming out?” Liam asked with a purity of innocence that turned on Max even more. “Sorry to disappoint you but no it isn’t and as I said I will now need to finish myself off. But let’s get measured first” said Max. Max knew he was a bit bigger than some of his peers but an official measurement was going to confirm things.

Liam reached for the tape measure and a drop of precum dropped off the end of the rock hard beast before him. The measurement came in at 16.8 cm (6.6″) with the thickness of a toilet roll which truly amazed Liam and gave joy to Max.

“I need to finish things off now, so it is best you leave the bathroom” stated Max.

“What do you mean? I want to know what you mean by finish off, otherwise how will I learn anything for when I get older” whined Liam who at this stage noticed that Max had his fist gripped around his throbbing cock.

“Ok. But as I said before this will have to be a big secret and you must not say a word. Now go and stand over by the bath as I don’t want you getting anything on you” ordered Max. Liam was not sure what was meant by this but did as he was told.

Max then started to move his fist up and down his length and Liam noticed that his brother was now also almost in another World. His balls had fully tightened up and there was a silky liquid oozing over the purple head. Max starting breathing a bit heavier and than grimaced in what looked like pain but then gave a groan of pleasure as five or six white liquid ropes shot from the lips of his cock and onto the bathroom floor. Max had cum for the first time in front of someone else which sort of turned him on and Liam had seen his first ejaculation. It scared Liam but he also understood that it had given Max pleasure and looked fun and he knew that it would not be long until he could do the same.

Max cleaned up the mess and Liam asked to have a look at the sticky mess. The smell was of bleach too. A sight and smell he would never forget.

The brothers had a bit of a giggle together. Max now wanted to do it again in front of his brother and Liam wanted to boast to his mates about what he had seen.

It would not be long before they would both have to decide what to do next.

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