Have you seen the new PSAs against the term "That's so gay"? They show teenage girls behind a cash register talking and every once in a while one will say, "That's so gay," and then some lesbian comes up and looks at one of the girl's name tags and says, "That's so Darlene" (or whatever her name is) and then lectures them on how it's "wrong' to use that term in that way.
I have a teen (well, 20). If the networks think THIS will work, they don't know teens. Their first comment on seeing that ad is, "That's so gay."