'Bad Teacher' Trailer: Cameron Diaz Smokes Pot, Shows Skin

She plays an ogre in Shrek. But she's truly a monster in this new film.

Cameron Diaz heads back to live action comedy, once her bread and butter, in the upcoming film "Bad Teacher," which is about, well, a bad teacher. Who wants to sex up and gold dig a geeky Justin Timberlake.

Yep, a geeky Justin Timberlake, her superstar ex-boyfriend. Hey, why not?

Diaz smokes pot, gets all wet and wild at a car wash and curses at kids. She's actually pretty hilarious -- it's a script written by Gene Stupinsky ("The Office") and Lee Eisenberg ("Year One"), so the pros do a good job here. Read the synopsis, take a look and give us your thoughts in the comments.

Here's the official synopsis:

Some teachers just don't give an F. For example, there's Elizabeth (Cameron Diaz). She's foul-mouthed, ruthless, and inappropriate. She drinks, she gets high, and she can't wait to marry her meal ticket and get out of her bogus day job. When she's dumped by her fiancé, she sets her plan in motion to win over a rich, handsome substitute (Justin Timberlake) - competing for his affections with an overly energetic colleague, Amy (Lucy Punch). When Elizabeth also finds herself fighting off the advances of a sarcastic, irreverent gym teacher (Jason Segel), the consequences of her wild and outrageous schemes give her students, her coworkers, and even herself an education like no other.