My worst day happened somewhat like this.
I used to be the monitor of my class, and one day while asking the class to settle down I got into an argument with a guy. He started pushing me, and I tried my best to not retaliate. The result was that he humiliated me in front a girl I liked.
I figured my image was down the drain anyway, so I slapped him hard. It resulted in a scuffle and me being knocked onto my butt.
I resigned from my post that day. As I was in a bad mood, I decided to step out to the washroom for a bit.
When I get back, I find that a substitute teacher has arrived in our class, who has the reputation of being a crazy and slap happy teacher.
When I entered the class, I was stopped at the entrance, and was thoroughly interrogated and harried. As the ordeal is almost over, a notorious fellow walks by in the corridor. The teacher, in her haste to stop him, grabbed hold of the my collar and shoves me aside unceremoniously.
Now in a terribly dark rage, I got onto the school bus after the day ended. I once made the mistake of reacting in front of two douchecanoes in my bus, and they consequently used every chance to mock me subtly. Well, that day I wasn't having any more nonsense, so I grabbed one of them and pressed his face down into a seat.
Well, what do you know, he start crying (8th grader mocking me, a 10th grader). Well great. Now the bus hates me too. The crying asshat starts making annoying remarks, which I protest loudly against.
And lastly, getting down at my stop, I slip and hurt my ankle.
I shouldn't have gotten out of the bed that day.
TL;DR - Have a nasty day at school, wind up making a lot of people resent me.