Of course, I firmly believe that it is a father's responsibility to impart all the necessary information to his son(s) regarding boners and the difference between them, pre-cum, wet dreams, blue balls, masturbation and ejaculation, the different ways to practice contraception (besides the use of condoms) and safe sex.
Guys also need to be taught our orgasms can be controlled. Learning to control ejaculation is how we get to enjoy the pleasures of sexual activity longer. A father should be able to discuss these things with his son(s) openly and honestly.
But mothers should be teaching their daughters about these things, as well. This kind of information should not be left to chance, or left to the boyfriends or new husbands to explain why they wake up with a boner, the difference between a sexually induced hard-on and a blood oxygen erection (BOE), or why guys feel the need to get their rocks off so regularly.
This is really why films and TV shows push the boundaries of censorship; to inform and instruct for those who never learned about this stuff.