Thanks for the lesson, LOL! But I'm guessing I've been having sex for longer than you've been alive, so I'm well aware! hehe
What if I told you ,you have guessed wrong! I am basing this on my guess that you are in your thirties,late or early doesn't matter!

You have made the common mistake of 'universal generalization'. Just coz people have been saying 15,18,20,21 or thereabouts,you have assumed me to be an over eager kiddo trying to teach an old horse old tricks! lol!
Anyway useful knowledge,used optimally, is not age specific! Sometimes an old man's[I am not saying I am!

] virility can surpass that of your popular stud. At times a kid just out of adolescence might, figuratively speaking, look like an impotent man's penis.
Hey! I have just discovered that sometimes arrogance can be endearing too!


The World is my country, all mankind are my brethren, and to do good is my religion.
Thomas Paine
Facts do not cease to exist because they are ignored !- Aldous Huxley