When we are young our hormones rage.
Teenagers break out in spots, parents turn into authoritarian overlords and best avoided, and they get that urge. Yes, that, urge.
White Ribbon campaign organiser Rob McCann is attempting to lift the lid on subjects that are uncomfortable to talk about.
Girls who engage in sex too young, he says, are showing up in hospitals with medical complications. And some boys exposed to excessive pornography are suffering from erectile dysfunction.
He's calling for more open discussion, especially between fathers and their sons, about things that remain somewhat taboo, or at least difficult.