The Movie: "Teen Wolf"
The Storyline: In the ultimate movie about puberty, Michael J. Fox stars as Scott Howard who wishes he could quit being a loser, dunk a few baskets and hook up with hottie Pamela Wells.
Scott suddenly gets hormonal rages and wolfs out in his bathroom at the full moon. Luckily, dad is ready and waiting behind the bathroom door, also wolfed out and looking like Bruce Vilanch. He failed to mentioned their genetic condition because turning into a werewolf and endangering an entire community can skip a generation like male pattern baldness.
Scott uses his new werewolf abilities for popularity and wreaks havoc around town, ignores all his friends and almost girlfriend Boof, and wins a bunch of basketball games. He eventually realizes he's an asshole and decides his true self is his losery, human self. Scott knows how to handle it. He suppresses his wolf-side, wins the big game and makes nice with Boof. Like Bella from The "Twilight" Series, Boof blissfully chooses to ignore that her boyfriend is a monster who could kill her during the next full moon.
The Parenting Lesson: You don't know who your kids are going to turn out to be. No matter how stellar your parenting, they may turn out to be werewolves, or the human equivalent of that. You'll have to learn to respect them for who they are, not who you expected them to be and extend plenty of unconditional understanding and support.