As I understand it, you are saying your foreskin does not retract by itself when you get an erection, but
can be pulled back relatively easily.
This is really quite normal
and certainly nothing to worry about. It means it gives your glans (penis head) good protection and keeps it sensitive, but will retract for when in the future, you have sexual intercourse. The only reason you might wish it to be a bit looser by doing the "exercise
" Jim cites, might be to allow it to slide back and forward more easily
in order to make the thrusting in intercourse easier - particularly for the young lady - if she is a little dry or "tight". On the other hand, when you get into a situation of regular intercourse, it would quite likely sort itself out as a result!
The little white spots at the end of your foreskin are blocked oil glands or "whiteheads" just the same as elsewhere on your body - at your age I used to get these on my thighs. Where they appear as "blackheads" you can squeeze them out if necessary, but they cause little trouble.
I think what you are describing as "white spots ... going from the bottom of the shaft to the top" are most likely these ones
, which are in fact absolutely
normal and not only harmless, but in fact little "pleasure sensors". What is interesting is that in circumcised men, they seem much less likely to be present, suggesting that without the protection of the foreskin, they "wear away" which would appear to be part of the desensitisation process which results from circumcision!
You have mentioned one of the great stunningly-obvious truths about masturbation! It is far
easier and more pleasurable when you have a foreskin to slide back and forth over the glans and those "pleasure sensors" that I mentioned. If you pull it back from the glans, how are you going to stroke the glans? Unless you are circumcised and your glans is as a result, very
toughened by exposure to clothing/ bedding etc., it is far too sensitive to be stroked with your hand dry; so you would need a very effective lubricant such as vegetable oil or one of the commercial lubricants sold with condoms.
This is the dilemma faced by circumcised men (and boys) they have
to use a lubricant to masturbate (easily), a common one is "Vaseline" but this is incredibly messy and difficult to clean up afterward (especially mixed with semen!). If however, you have a foreskin, then it is natural to masturbate using it, and even easier if it is long enough as in your case, to stay over the glans unless actually pulled back. Masturbation isn't all there is to life, but for most men will in fact be the most common form of sexual outlet they have, so consider yourself really