My theory: 90% of all guys admit they've tried; 5% can perform auto-fellatio; the remaining 5% just lie about not trying it! I'm one of the lucky 5%. I suck & swallow myself regularly.
You are lucky, because I am one of the 90%. I don't know how the numbers break down, but I do know that I am a 90%er that has also came in my own mouth. My wife who at the time was just a well loved girlfriend, caught me in the attempt to suck my own cock. She didn't quite know what it was I was trying to do, and when she asked I guess I stuttered over my response to much for it to be believable. So I told the truth, a very novel approach for me at this point in my life. She immediately turned bright red, and I thought that was going to be the ends of a beautiful relationship, until she dropped her panties to the floor and put one foot up on the towel bar, I was still on my back holding my knees up by my ears. From my back on the floor I could see the stream of pussy juice flowing out of her, both thighs very quickly became slick with her wetness, and she began to tell me how seeing me like this and catching me lying, but having eventually to tell the truth, produced heat and feelingsin her that she had never had before. Then she told me to try again. So I rolled unto my shoulders and tried to pull myself into my mouth, I with alot of effort could lick from the top of my head over my precum dripping urethral opening, sliding the tip of my tongue into my pee hole as far as it would go and then on to the notch on the underside where head and shaft come together. But I could not suck even my head. Then I feel her hands pushing on my hips driving my cock ever closer to my eager mouth. Slowly as my body contorted that way I was able to close my lips around my head with my lovers help, and as she held me there for the first time ever I was able to suck my own cock. watching me suck my cock made her aggressively strum her clit, and then she came in a drenching spray of female ejaculate. That was all it took for me. Her cumming induced me to cum another first spraying my own jizz across my tongue lips and face. I came harder than I ever had before choking myself on what seemed like a gallon of cum.. Now she has been my wife for 17 years and tries about once a week to help me suck my self off over the years their has not been much success, but every now and then my head slips past my lips and my semen flows into my mouth. These infrequent little victories will keep us trying.