If you have not reached puberty at 18 you need help from a doctor to start it with medical help.
Some boys can start very late, into their late teens. However, if you are concerned, speak to your doctor about possible hormone issues.
17 sounds a bit late to have not even started. I'd contact a doctor and see if there's any hormone problems.
If he has a testicle, there will be sperm.
It is certainly possible for it to happen. As long as the boy has reached puberty, it is possible.
through puberty
it is normal
Sperm is produced when a boy has reached puberty. The average age to hit puberty is around 12-13-years-old. It would be very unlikely for a boy that age to have hit puberty. I have not heard of it.
hi mate
Of course you dumb@ss
A boy with one testicle goes through puberty the same time a person with two does. The second testicle is a spare!!!! You only need one!
When a boy begins puberty, his voice will lower. There is no significant difference or change in voice for girls.
Yes, it is very much possible. But people going through puberty should not be having sex. Be sure to use protection in future.