The terrible incident that happened

I thought today would be a pretty normal school day for me but I guess I was wrong about that. Today, many terrible, embarrassing, random, unusual things happened from fire alarm to getting into trouble with the teacher. In the morning a fire alarm started to ring as the class was coming to a close and I stood up with my hand up in the air yelling "YES!". My teacher got mad at me and started yelling because she didn't like my behaviour. As if I care. Anyways the whole class already hates her so I do not think it matters if she hates me back.
Next thing that happened was during chemistry class, there was nothing special except letting the teacher check our pre-lab before we started conducting the lab. However the events started happening when I started performing the lab. Through these events my teacher hated me even more. Oh well but let me explain it.

I was pipetting 10mL of vinegar from a plastic beaker (size: 4cm height) with the rubber squeezing thing(pipet bulb) at the top. Suddenly the volumetric pipet slipped out of the pipet bulb and fell on the counter. By the way the pipet was a thin tube of glass and you know when glass falls. BLING, pieces of glass bursted out as the pipet collided with the table counter. My teacher instantly turned and stared at the mess that I had made and gave me a short lecture about not fooling around. The group next to me remarked: "I won't be a 傻瓜 like him." In my head, I was like I wasn't being stupid, it was really an accident, not as if I had intended to do it. She told us about her other class which two guys were fooling around and one of them had got a 0.
After that, I let my partner do everything that was made out of glass because I did not even want to break anymore things. This was basically everything because all the materials and apparatus was made of glass: erlynmeyer flask, volumetric flask, pipet, etc. Also, we started out with 20 marks with the start of the lab and I had already lost 2 marks because of breaking the pipet. Apparently, the pipet that I broke cost $20!!!
After that, my teacher deducted another 2 mark because my partner was not using a piece of white paper to measure the volume of the solution. He was using his hand which was not good enough for her and so both of us lost 2 marks. So I am at 16/20 already in just 10 minutes. The purpose of the sheet of paper was to block out some of the light so we can read the volume accurately but the palm of your hand finishes the job as well.
At the very end of the class, one of my classmates broke the volumetric flask ACCIDENTALLY and he was not yelled at. This is just UNFAIR!.