I always had considered myself as a regular straight guy. I love women and I had never been attracted by guys in any way.
It all happened at the gym in which I used to do weight training. There it was a coach named John. I knew him for a long time, and we were good mates. At that point I did not need many advices regarding my training, but we used to chat a lot about the technics. He was taller than me and better fitted overall, but I was able to lift heavier weights and sometimes I teased him a little with that.
That day I went to do my training late in the afternoon. I had been busy but I did not want to skip the gym day, so when I finished there was no one there except John. He told me that there was no rush, I could stay until I finished.
Finally, I went to the locker room. I was really exhausted after the long day and the exercise. There, I took a shower and relaxed a bit before getting dressed. I usually don't like locker rooms, I'm very shy, but given that there was no one, I took it with calm.
There I was, resting under the shower, when John came into, right beside me. That took me off guard, and I even startled. Then I looked at his side and saw it: the biggest cock I have ever seen in my life. It was the first time I saw him nude, and anyway I do not usually stare at guys, but that time he appeared in front of me, I was not able to avoid it. I could not believe my eyes. Even soft, it was really impressive. I felt really intimidated, specially because the size of my penis is below the average.
It bounced from side to side as he moved in a way that I had never seen before. Without realizing, I was staring at it, with a strange sensation among envy, admiration and shame. After several seconds, he broke the silence...
John: "So... you had no idea about my penis size, right?"
Me: (ashamed of my behavior) "No... I mean, I'm so sorry. You know me, I don't like men, it's just that... I didn't expect that"
John: "Don't worry, it happens to me all the time. Wherever I show this off, I have a 'club of admirers'"
Me: "I'm not an 'admirer', dude, really. Simply it took my attention something unusual"
John: "Relax buddy, almost everyone reacts that way, It's... I don't know, normal, I suppose"
It was not just the size. It was so thick. The skin was pale, almost pink. It looked soft, but very consistent at the same time. It was resting over a couple of hairless rounded big balls.
The situation made me feel really uncomfortable. I tried to avoid looking at it, but it was not easy because John was talking to me and although I did my best to keep my eye off of it, my mind was tricking me to look down.
Finally, he reacted to my nervousness.
John: "Believe me, my friend, it's better that you satisfy your curiosity now. I know that men with... not so big dicks have a hard time with mine."
Me: "You have no idea how lucky you are. If I could own something like this..."
John: "I'm sorry that you feel that way. Listen, you are a good man, we know each other for a long time. I would like to help you, you don't need to feel bad in any way. Maybe if you watch it for a while, you get used to its size and you don't feel bad any more about it."
Me: "It is not that I want to look at it, it's just... so big, I mean, it's not fair!"
John: "I know, but what can I tell? That's life. Anyway, it's not like you can measure your manliness by the size of your cock"
Me: "That's easy for you to say".
John: "Sorry dude, I didn't mean to upset you."
Me: "It's my fault, I don't know why I feel so envy, like you say, I shouldn't, but I cannot control it"
John: "It's ok buddy, I told you, don't fight with it, just have a closer look, believe me, in the end you will feel better. It's ok, just relax, take it like a therapy."
For some reason I did what he told me. While he said something about it, he took it in his hand and started to stoke it slowly. He was not able to close his hand around it. Wow, I could kill someone to have one like that, to feel the sensation of stroking it that way...
John: "Look, it is so soft, so good to have my hand around it that it's like the natural way to have it when I want to rest. I do it all the time, even with both hands. Let me show you"
He did something unexpected. He took my wrist and guided my hand to his cock. I tried to resist, but he pulled too hard and my muscles were exhausted. He put my hand around his cock so he forced me to take it.
Me: "What the hell are you doing! Set me free!"
John: "Shh... Just feel it, imagine it is your own dick, trust me, only for a moment. This is the closest you will ever be to have something that big. It's my gift for you."
Me: "But this is gay, and I'm not"
John: "Neither I am. You know I have a hot girlfriend. Remember, relax, you don't need to worry about anything, just clear your mind and feel it like it was your own member, this way at least for a while you will own a king-size penis"
For a few seconds I felt it. All my hand was surrounded by that hot genitals. I took back my hand a little, but he insisted. I felt so overwhelmed that finally I stopped fighting and took it by my own.
John: "That's better, feel your new cock, take it with both hands"
And I did it. I was stunned. Like John said, feel its thickness and softness, its weight, was somehow relaxing, almost hypnotizing.
John: "Good, you can take it more firmly, feel the inside by making the skin slide"
Me: "Oh my god, I can feel it, it's incredible"
John: "No, not yet. Make it hard and you will see something incredible"
Without thinking, I started to stroke it. It was hard because my position was uncomfortable, and my arms were tired.
John: "Move in front of it, on your knees, it will be easier and you will have a better view"
I simply obeyed. I fell to my knees and started a propper handjob. Little by little, it was getting hard.
Me: "Wow, it's even bigger that I expected..."
John: "Do you like your new cock?"
Me: "Oh yes, it's the perfect penis"
John: "Do you like stroking it?"
Me: "I think so, it's so different than doing it to mine..."
John: "Forget about your little thing, now this is yours"
I kept doing it for several minutes. Little by little, it was getting hard. Finally, he got full mast. It was something really impressive. I pushed back the skin so I was able to see it in all his magnificence.
John: "Do you like the mushroom, don't you? You took it completely out and it's oozing precum"
Me: "It's amazing, the skin looks so soft and tight..."
John: "You also can feel it, but it's to delicate for a hand, you must use your tongue"
Me: "I can't do it, that's too much"
John: "Look, every single man would suck his own cock if he could. And some people can. Don't be a moron, you will feel it in all its essence"
Then he pushed my head towards it... and I just took out my tongue a little, so it happened. It was so soft and hard... I tasted the precum with my tongue and the truth is that it was not bad at all.
John: "Feel all of it with your tongue, you can also use your lips"
I did it. There was no way back from that. Eventually, I opened my mouth. I hesitated, but he pushed my head again, and some of it entered my mouth.
The more wrong I felt about that, the more excited I became. Soon, all my mouth was invaded by his cock. I started to suck it avidly. The sensation was so strong that I was not able to stop.
After some minutes (I lost the notion of time) doing my best on savoring his cock, he broke the silence.
John: "Oh yes! you are good at this. Now that you have the full picture, you actually prefer savouring it more than actually owning it, don't you?"
Me: (taking it out of my mouth) "No, I'm not a fag..."