Bad Teacher (2011)

For most, teaching is an honorable profession -- except for Elizabeth (Cameron Diaz). The foul-mouthed, boozy woman can't wait to marry a rich man and quit her job, but she has to rethink her plans when her sugar daddy dumps her. Then Scott Delacorte (Justin Timberlake), a substitute teacher who's cute and rich, arrives. Elizabeth can't wait to sink her teeth into a new meal ticket, but she faces stiff competition from Amy (Lucy Punch), a popular and perky colleague.