Why can't I call myself an idiot when I do something dumb?

I don't know. I call myself an idiot or an imbecile quite often, but I'm sure I wouldn't take kindly to a "friend" doing it...unless we were laughing together about something goofy I'd done.

If she is an actual friend, she probably doesn't want you thinking you really are an actual "idiot".

Because she's sick and tired of you fishing for a compliment.

Women love confidence.