How would a teenage girl's father react, if an ill-tempered man in his 40s called her a "stupid bitch"?

That is, if her father was present and heard it.

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I mean, wouldn't the insult be justified? Like the girl isn't very bright to begin with?
How would a teenage girl's father react, if an ill-tempered man in his 40s called her a "stupid bitch"?
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