I'm 24 years old. My penis is 5 inches long. I found the cover skin is very open and flexible and it goes to the end when I pull it down, but when I pull my skin cover of my penis it does not go to the end. Seems like some veins, like thread, is holding my cover skin to the top of my penis (the mushroom shape part). If I cut it by operation will my penis grow or is there any other thing which I could apply to increase my cock? Please help me out. I'm worried about my future, that I may not satisfy my girlfriend or wife. Thank you!
First off, your penis does not belong in any woman until you get married. "Do you not know that the unrighteous will not inherit the kingdom of God? Do not be deceived. Neither fornicators, nor idolaters, nor adulterers, nor homosexuals, nor sodomites, nor thieves, nor covetous, nor drunkards, nor revilers, nor extortioners will inherit the kingdom of God" (I Corinthians 6:9-10). "Fornication" is having sex without being married. Your penis belongs to your wife.
Second, the size of a man's penis has almost nothing to do with the satisfaction a woman has in sex. Satisfaction comes more from how sex is done, including the use of the penis, not the size of the penis. When you get married, your wife's vagina will adapt to the size of your penis to bring about maximum pleasure.
Now, in regards to your problem, we need to first define some terms. The skin covering your penis is called the foreskin. The end of your penis that is mushroom shaped is called the glans.
Every male is born with the foreskin attached to the glans. This normally separates by the age of five. Sometimes it doesn't finish separating until puberty. There is a simple exercise to encourage the separation, which can be found at "The skin on my penis doesn't retract all the way." If after trying this for a few months it is still attached, you need to see a doctor about getting it detached. Doing so will not change the size of your erections nor cause the penis to grow more. You are at your full size now.
While there are plenty of people willing to sell you all sorts of gimmicks claiming to make your penis bigger, none of them work. All you will end up with is a lighter wallet.