We used to laugh at the "crazy" Baptists. But at this point if I had kids. There would be no TV, cell phone or the Internet.
At some point you justa gotta put your foot down. Explain to your kids it is us versus them. Even if the "them" will say "that's not very Christian".
I say to them...
It's not very LEGAL for you to be on the Internet waiting for my daughter to turn 18 so you can take her to your adulterous bed. And it's not very Christian of me either to say "I hope you drown in your hot tub instead". OK I need to take a moment to count to ten or pray to Jesus.
Happy thoughts...happy thoughts...help me out here buddy.