Talk about flippin' the bird.
When you have kids, there are a lot of things you have to keep them away from. Aside from violence, gore, and anything Kardashian-related, you also need to be careful not to swear in front of them. Y'know, 'coz kids are innocent and they need to retain their innocence as long as possible. Because childhood is beautiful and precious and everything.
Or maybe you need to do it mostly because if they cuss in front of their friends in school, then their friends will learn it. Next thing you know, you're dealing with some angry parent who's at your doorstep yelling, "YOUR LITTLE DEVIL TOLD MY LITTLE ANGEL TO EFF OFF!"
But hey, maybe you can handle all the angry parents in the world if the results are this funny? Sure you can!