Roxie was explaining each of the status of the three men that were linked to her:
Marty: He only came out in that infamous interview for the soul purpose of making it clear to the public that Roxie is not interested in Rico. Roxie said he had good intentions even though his actions were a bit misguided.
Rico: Nothing. Nada. Zip. Null set.
Luis Alandy: That they went out a few times before Roxie entered the house.
As Roxie was wrapping up the clarifications, Rico spoke up and said:
Rico: Can I ask you something?
Roxie: Yes.
Rico: What does this mean? (Holds up his Henna tattoo that Roxie drew on his hand).
Roxie: Meow.
Rico: So what does it mean?
Roxie: (I don't remember her exact words, but she said something like "Special meaning, BUT...."
Rico: (Kept on badgering her until the hosts intervened).
The way it came across to me was that Meow thing was Roxie's way of making amends. It was her nice way of telling Rico that even though they have no future together, she still considers him a special friend.
But Rico, being what he is, insisted that she own up to the "Special Meaning" that he thought was in that Meow thing even if it only exists in his head.
Roxie replied with something like (rough paraphrasing) "How am I supposed to be OK with you when you keep insisting on bringing out in the open things that I don't want to say because it'll only embarrass you?"
It's like she just couldn't express herself appropriately because she didn't want to say outloud that "Rico, you suck."
More info in this retarded, but entertaining thread:
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