During puberty, males tend to get erections for seemingly no reason, very often. If you have noticed this stop happening, it means that you are finishing puberty. As men age, it becomes progressively harder and harder (no pun intended) to become erect (ie. puberty=erections for no reason / elderly=you might need viagara). Your penis is a sexual tool, and now that you're done with puberty, its biological programming instructs it to only get erect when you're preparing for intercourse. Jacking off to porn is an artificial form of this, of course, because you are just replicating in your mind the sexual situation. That is why, without that situation in mind, it may be difficult for you to get erect. As for how long it should stay up afterwards, that is different for everyone. If it stays up for over an hour, you should see a doctor; there's some medical condition that involves blood flow that does that... it's not good. Anyway, you are normal. Congratulations.

You're young and (hopefully) haven't had any of your own sexual experiences to think about while you mass-ah-bate. The big problem would be if you can't salute while you're ACTUALLY getting it on unless you think about porn. If you're concerned though, take a porn break. You might be becoming porn-dependent. No matter what though, don't sweat it. You're normal. Unless you're getting off to goat porn. You aren't, right? Pervert.

I actually thought that was the reason for it. But allow me to say something really stupid too: I pulled on my penis for a few days in a row, to try and make it bigger (so I've heard) it started to hurt near my right testicle, but the pain was inside my body, not on my actual testicle. It hurt when I got an erection (when I pushed, if you know what I mean). It's gone now, I wonder if that had any effect on my erections? I think it might of, but then again it might just be coincidence.

I've never had sex, as for the porn, yes I watch goat porn all the time, but I mostly enjoy rabbit on elephant. I think I'll take a porn break, good idea. Which is another thing I'm concerned about.

It's possible that I can look at so much porn that my brain becomes 'desensitized' right? I think that might be happening aswell, but I'm not too sure.

Yeah, you can become desensitized. Just take a little break if that concerns you. And always remember that porn is unrealistic and real sex will be very different. Or at least it usually is. Unless you also have a camera, lights, poor acting skills, and a fluffer.

i done the same as netninja an it was my penis that hurt and i cldnt wank for a few days! this has nothing to do with the problem but jst thot id mention it!

make the most of it dude! im 30 and i cant get one when i fucking want one!!!