Forget “Our Miss Brooks,” “Lean on Me” and “Stand and Deliver.”At the Bowery Hotel following the Ziegfeld preem of “Bad Teacher,” the stars gave a review of the lousy instructors they play in the Sony pic. “Mostly creepy,” said Justin Timberlake. “A goody two shoes, extremely irritating, hard to like and a little unhinged,” said Lucy Punch. Cameron Diaz gave her bad teacher slightly better marks. She also saw no problem in blasting all the child actors with four-letter words in this R-rated pic. “Everybody’s heard those words,” Diaz began. “There was consent there. I told them, ‘Any scars you have 20 years from now, any physical, emotional or mental scars you have to deal with in your lifetime because you did this movie, don’t blame me! It’s your parents. They said you could come here and do this!” she added, then broke out laughing.