Should a girl be insulted if he slaps her butt?

okay so I'm a normal girl, high school and all, and I've been told I have I nice butt. that's really the only way to phrase it.

my friend got asked out one day and when she got up to leave later, the boy slapped her butt, so she slapped his face! I personally think that was kinda stupid and unnecessary of her.

if a guy slaps my butt, even in the school hallways or something,i just take it as a joke or flirting. should I not?
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+1 y
okay. so allot of you are saying that you think it's offensive, and I see your reasoning. BUT do you think the personal space goes as far as maybe grabbing your waist? like tickling you? my one guy friend does this and I think its okay.
Should a girl be insulted if he slaps her butt?
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