Sometimes knowing is MORE than half the battle.

Allie:Okay superhonkey
Josh: Allie, you know that "honkey" is racist right?
Allie: What?! Whatever. No it's not.
Josh: Yes...it is.
Allie: Really? Are you making up?
Josh: It's the same as "cracker"
Allie: No! No way! Crap! I called Bertha 'superhonkey' today!
Josh: What did you think it meant?
Allie: I didn't THINK it meant anything. It was just a funny word from Cleopatra Jones.
Josh: Allie, EVERYTHING in that movie was racist.

Later...

Allie: Josh, seriously! Why didn't you TELL me that?! Why did you let me go around saying racist stuff for the past three years!!?
Josh: Don't blame this on me, you're the racist.

Later...
Allie: I can't believe I didn't know that.
Josh: I can't believe you didn't know that! I mean, you read all the time.
Allie: Well, I don't read RACIST stuff...

Even later...
Allie: I can't believe that. *petulantly* Are there any OTHER racist words I should know in this country??
Josh: *sighs* Probably.