This is Scott O'Hara from Michael Rosen's book Sexual Art available at Amazon. - Image by Michael Rosen
Here are all the facts, experiences, techniques and media/links we have on:

Autofellatio

With contributions by Will1939. - Thanks!

When a man performs oral sex on himself, putting his penis in his own mouth.

resources

Solosuck | www.solosuck.com...  Al Eingang is more than a resource, he's a GOD of Autofellatio.  There are free clips (warning- with SOUND), and damn... If I were a man and I could do that, I would never leave my house.

Milovanian Thoughts

Self-sucking is probably something many men wish they could do but only a few lucky ones actually can.  From my teens to early thirties I was flexible enough to do it, and did it pretty regularly about twice a week until age 29 (got married) and less often after that.  It sounds great and in a way it is, because it is unique and kind of a double sensation, the feeling of sucking and being sucked at the same time.  I did better than some guys I have seen in pictures and videos because I was able to suck the whole length of my cock.  However, it does require regular strecthing exercises and you have to know what positions to use, and it is easy to get a sore back or neck if you are not careful.  It is not the be-all and end-all of sexual experiences--nice but so is most everything else.