Grow for a few more years. Everyone goes through the same thing. It's the start of puberty. You will grow more, start to get facial hair, voice will get deeper and just about anything will give you an erection. It is just the process we all go through.
DSLuke EDIT:
Thanks, its nice to know that my body isn't going crazy / turning into a sex freak.
Someone might get an erection like ALL I mean ALL the time non-stop erections due to easy blood circulation in the region.
Puberty happened...some girl is turning you on or something. It'll stop only when you stop getting turned on or when you get used to the feelings and learn to control them.
As far as I know, you might be able to prolongue erections since you will train yourself to keep the urge to ejaculate and thus extending the time your erection will last (with time, your penis will know that he has to continue). Although a lot fo things can affect erections, such as stress, mental/physical disorders, etc.
If you get erections then you must be aroused. You may not be thinking about sex, but your body is. For some men, usually younger ones, it doesn't take much to get erect.
No, but it could have an impact on a hiring decision depending on the reason for the extended absence.
You can get erections any time. Hormones do it to you.
Combine the hormomes of the average college guy (raging) and the physical contact - it doesn't matter if he's straight, they get erections all the time.
Yes all guys get that Once you hit puberty you start to get erections, there is nothing wrong in it as it is a sign you are normal and growing up. You should seek some privacy and attend to it now and again as masturbation is normal also for teenagers.
Yes, the natural penis is flaccid. The penis will have erections or part erections from time to time as part of a natural healthy body. He may be having them when you do not notice or he may not, it's nothing to worry about.
No, boys get erections very easily, often for no reason at all. This doesn't mean you are gay. You are gay if you are sexually or romantically attracted to the same sex. Your sexual fantasies will mostly be about the same sex, and they have been like that for some time. That's how you know.
Justin Bieber is a young teen singer that everyone likes for some reason. His time will come, then go. Be patient.
Although they might be annoying, this is totally normal and natural for a 15 year old. It is just your body adjusting to puberty. They will stop being so frequent when you get a bit older.