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**TL;DR at bottom**

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Heres the story.

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My and my friends were studying for an upcoming science test, we are all in the same grade nine science class and the test was in two periods. We had both periods to study and we were getting along fine until my friend who I will call "M" asked a question to the group. M and I have a shaky friendship but we've always gotten along fairly well. As M asked the question I went to answer, I hadn't answered any questions previously but as I started to speak M told me to shut up.

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This went on for a while with her telling me to shut up every time I tried to answer a question until after about 5minutes, I tried to answer another question, this time instead of being told to shut up she slapped me on the leg. This surprised me but I didn't think much of it. As the studying went on she continued to slap me every time I attempted to answer a question, slapping me harder each time.

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After I while I got pissed and told her she was being "a little bitch and she should be physically abusing me for trying to get good marks in a class." She lost it and starting attacking me over and over again by repeatedly slapping my arms which were raised over my head. 

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I sent her a text apologizing for insulting her later that day but she still hasn't answered my (this happened two days ago).

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TL;DR I called my friend a bitch for not letting me answer questions in our group study group and slapping me when I tried to answer them.