If a girl calls you an idiot, does she think you're not smart?

I was talking to this girl, I was either saying something stupid to be funny or joking around, I don't remember. But anyway, she laughed and said, "you're an idiot" I don't think that it means that she thinks that I'm dumb but what do you think?
If a girl calls you an idiot, does she think you're not smart?
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