I don't know what I'm supposed to do!?

It was lunchtime today in my middle school. Me and my best friend Gina were sitting together having a blast talking and what not. Then, I seem to notice that the administrator was tapping a dirty trashcan and putting his hand in it. I said ( I'm not going to say his name) " Your hand was just in and on a dirty trashcan. That is very unsanitary." He got TICKED! He answered like a ," So. The bag where I was touching isn't dirty. There is nothing in the trashcan. Zip your lips." He tried to make me look in the trashcan and my friend was like ha you can't make her do that you . he was like " You both need to shut up." he got extremely irritated after I added on " Well she does have a point. I was just saying that it is seriously unsanitary to put your hand on a dirty trashcan." He got TICKED AGAIN! He answered " Shut up this is my job and you are just a kid." He got extremely angry and SWUNG HIS FIST AT ME AND SAID UGHHH My friend was sitting there screaming you can't do that to my best friend ( I am disguising my name with my middle name) Summer! He was a jerk. I stood up and said straight to his face " BOY! You can't do that you effin munch! Come over and hit me! See what happens! I don't care who you are! If somebody hits me, I am hitting them back 9 times harder! And since you are a guy, I have the right to scream like a little girl and I can kick you in the groin." He stared at me and my friend and said, " Oh you are so lucky that you aren't my age." I knew what that gay meant. My friend said, " Summer, if he hits you, we are knocking the crap outta that man. I dunno who he thinks he is!" He walked away. I came to notice the other day that he had a hicky on his neck and razor burn on the other side! LOL! My friend had to hold me back from kicking him in the . She felt mad all the rest of the time. She thinks it was making me feel threatened but I was like haha I can kick that fat mans . Don't you worry bout a thing! What do you think I should do? When I was on the bus today, my administrator put her in my face. I said, " Lady your is in my face! Please remove your big butt outta my face!' She just moved her butt even closer! My friends said I should have slapped her in the butt but I was like ew she is a freak and a lady! But my first case is what is bothering me. What should I do????????????????!!!!!!!!!!!!!!!!!