Swearing in Asterisks

Ok, last post as a sixteen-year-old brat.

I've been feeling very suppressed lately, like rolled bacon between toast or like a coke bottle shaken overmuch. I haven't done stupid things in a while and it feels like time wasted. I'm being such an obedient cow heeding orders and following school rules that I've turned into a cautious coward. It feels restrained and very dreadfully boring and from that a malicious anger condenses and I can't disregard it because every day I'm in class I'm swearing in my mind in asterisks. Otherwise there's just a very irritating bug buzzing near my neurons that I can't swat away unless I saw off my head.
I think I might be on the verge of contracting a rare emotional disorder in which boredom quickly turns into inexplicable anger. Talking to friends help but only serves as a distraction.
And the thing is this only happens in school, and this unfortunate situation stretches whenever I have to stay back until early evening. I get really heated up and I have a problem expressing anger; I don't do all those table-banging, shouting, screaming bit, because it's not genuine anger, it's just a form of boredom from being repressed. I think it's those bloody sickening pink classroom walls (and bloody red tables and bloody red chairs and my own bloody red uniform). They incite wrath, discontent and mild murderous moods. If they were a logical shade of blue I would have gladly shut my mouth up.