What if one day you went to work and there was a meeting to discuss whether the project you were working on crossed the line into child pornography? You’d probably think you had ended up in the wrong room. And you’d be right. Last week, my colleague Brian Stelter reported that on Tuesday, the day after the pilot episode of “Skins” was shown on MTV, executives at the cable channel were frantically meeting to discuss whether the salacious teenage drama starring actors as young as 15 might violate federal child pornography statutes.