Lying is bad. At least that's what they tell you from a young age. But as controversial as it may sound, sometimes lies are necessary - even from the people who are supposed to teach kids right from wrong. You see, parenting is difficult. You've got these annoying critters hanging around 24/7, and they always seem to want things that are either bad for them or prevent you from having a good time. The thing is, they've got some pretty malleable brains. They're still learning about how the world…