Post the Twelfth - Kneejurk

I was talking to Malissa last Saturday before the show and she said that she had gone to RCH. I replied that I knew someone who went there, Katie Panburn. Without a seconds pause Malissa says, "that slut".

Now I haven't seen Katie in four or five years, so I have no clue what has happened. But I've been thinking about this one exchange all week. What is the first thing that people think about me?