"America's Next Top Model's" Bianca, left, and Shannon, right, have nothing to smize about.

It’s been a mean month in reality TV.

In “Top Model” land, the very religious Shannon devised a phone allocation plan that would have given zero minutes to Bianca. Bianca protested. Shannon cried. Bianca dubbed her “The Crying Christian.”

Over in New Jersey, Real Housewife Teresa said to her sister-in-law: “You are the devil. You’re wearing red. It matches you.” She also insulted Real Housewife Caroline’s meatballs. And “Jersey Shore’s” Snooki suggested unbeloved roomie the Situation go live elsewhere, “like in a garbage can.”

Why do I share these tales of meanness? Because the Girl Scout Research Institute polled 1,141 American girls, ages 11 to 17, and found that 28 percent of girls who watch reality TV endorsed meanness as a means to an end compared to only 18 percent of non-watchers. Reality watchers were also more inclined to lie to get their way. On the other hand, survey says: 46 percent of reality TV-watching girls want to be leaders versus 27 percent of non-watchers.

The findings are a bit confusing. But one thing is perfectly clear: America’s politicians are heavily influenced by reality TV.