What does it mean when a girl likes to annoy u?

There’s this chick in my class that likes to annoy me quite me a lot like once she hid my pencil case to kind of making me a joke and like almost every time she pass by me she would punch me on my shoulder jokingly.., what does it means, is she a bully or is it flirting?

What does it mean when a girl likes to annoy u?
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