My brother hit me- what do I do?

We were just joking and he went on a recording app that changes your voice and he said "heil Hitler". Sort of joking, I told him "it's rude to say that when millions of people died" and joke-smacked him with a pillow twice, not to hurt him. Then he smacked me hard in the head with the pillow and I started crying immediately. My dad just called my brother because I had texted my dad and I told him to give me the phone (it was on speaker) but my brother said he couldn't even trust me with holding his damn phone. Now I'm crying and I feel disrespected. This isn't the first time my brother has hurt me and gotten away with it.
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Some of you guys- not helpful
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I have a bad headache
My brother hit me- what do I do?
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