Mean Girls by BruceM

Which self-help book by Rosalind Wiseman partly inspired Mean Girls? Its title refers to two sets of people; its subtitle is "Helping Your Daughter Survive Cliques, Gossip, Boyfriends & Other Realities of Adolescence."

Which co-star of the movie Date Night wrote the screenplay for Mean Girls?

What 2003 movie, a remake of a 1976 film, was the first cinematic collaboration between Lindsay Lohan and director Mark Waters? (Mean Girls was the second.)

Who had Lindsay Lohan's role, co-starring with Barbara Harris, in the 1976 movie referred to in question 3? That same year she had a small but important role as a young prostitute in Taxi Driver.

What six-word phrase, a quote from Mean Girls, did @WhiteHouse tweet in August 2013 along with a picture of Bo? (The tweet itself was seven words, starting with Bo's name.)

Which fast food chain retweeted the photo mentioned in question 6 along with the question "Do you wanna do something fun?" In the movie, Regina claims she can't go here because she's on an "all-carb diet." ("God, Karen, you're so stupid!")

What food product, introduced in 1985 and marketed under the Pillsbury brand, was said to be the source of Gretchen's family fortune?

What two-word phrase fills in the blanks near the end of this snippet of Mean Girls dialogue? "Why didn't they just keep home schooling you?" "They wanted me to get socialized." "Oh, you'll get socialized all right, a little slice like you." "What are you talking about?" "You're a BLANK BLANK." "What?" "Own it."

The 12th grade version of which specific class is on Cady's class schedule, much to Damian's surprise? Cady's reason to like (the general topic of which this specific class is a subtopic) leads Damian to say "this girl is deep." Note that we want the (one-word) name of the class Cady is in.

What hit single did Janis Ian (the real-life singer, not the Lizzy Caplan character) write at age 13 about the then-taboo subject of forbidden interracial romance? This song also titles Janis Ian's autobiography, and was briefly thought of as a one-hit wonder (this song being that hit) until "At Seventeen."

In what 2010 movie does Lizzy Caplan play a music journalist and love interest of John Cusack's character?

What adjective is the last clearly spoken word out of Regina's mouth (as Cady is trying to apologize to her) just before Regina gets run over by a bus? (An obscenity is strongly implied but preempted by the impact of the bus. We don't want the bad word; we want the adjective right before it.)