ChazsBrilliantAttitude the medication you mention, is that once you've established it's going to be difficult etc, I never had really painful periods so it was not that bad, I know I was lucky (my sister also had endometriosis, so I was very lucky to escape that).
dementedma thanks for explaining. 
Skydelic wish I had known all that when I had periods. I went through a time of 'flooding' when I bled like a stuck pig, but it was a quiet specific time in my life, in my late 30s or 40s, so I always wondered why it was so heavy at that time. I actually wondered if I might be losing more than just a period as we were trying to get pregnant at the time, and it just seemed so odd.
monkeygone I know boys voice breaking is a drawn out process but there must be a first time it happens at all. Plus I could not think what one could 'celebrate' for boys in terms of puberty.
"ejaculation of semen around 13 (involuntary- so wet dreams). Are you thinking of celebrating both?!" No, was not, Bountybarsyuk if you don't want to know the answer maybe don't ask the question. 
littlefrenchonion re "hmm Come on, really?! Don't you remember how you felt at this age?" I odn;t know that I remember feeling bad about starting periods.
"Regardless of cultural and social attitudes, most teens are hyper aware of their bodies and feeling very self conscious." perhaps all the more reason to at least allow for the fact that it does not need to be a source of embarrassment. Not in an age when people are displaying their hemorrhoids on TV's 'embarrassing bodies!
Re "My mother presented me with a period gift at the age of 13 in front of the whole family. I was really flipping annoyed with her and felt she was actually being quite thoughtless!" I am very sorry your mum did that but my opening post expressly said I don't mean without their consent, e.g. telling people they've started their periods or their voice has broken!
acasualobserver no, I won't be celebrating my son's first wet dream.
I think for little girls the onset of periods is far more significant than a boy having a wet dream. As a feminist I see this as a feminist issue to not be embarrassed about our bodies etc. Boys, I think, are much less worried by all this. I'm not sure what you are getting at really, seems a bit mean to want to drag an answer out of me because I forgot to address what was, I assumed, a rather sarcastic comment by you a few pages back. But if you seriously wanted an answer you now have it.