it was a trap.

KYM: Oh! I wanted to tell you... no, never mind, I can't. It's too embarrassing.
ME: Come on.
KYM: No.
ME: I'll tell you about something stupid I did and then you just tell me your thing.
KYM: Okay, fine.
ME: (tells previously mentioned story)
ME: Now you go.
KYM: Oh, well my thing's way less embarrassing than yours.