OK
these are some things that i know i have done and have worked very well! So being the kind person i am i have decided to share my wisdom with others (and possibly put teachers off teaching).
- Humming : get people from random places in the class to hum quietly. this will not only annoy the teacher but she won't know where it's coming from! Double comedy value.
N.B Make sure you know which teachers will or will not figure it out and hum quietly at all times
- Swaying : Get everybody to sway in the same direction very gently. you will probably con your teacher into believing there is something very wrong with her eyes
- Desk moving : every time your teacher turns around then move you desks very slightly backwards. repeat going forwards when no more room in classroom. again you teacher will be very puzzled.
- Mice : someone in the class shouts OMG IT'S A MOUSE! suddenly all hell lets lose and chances are there will not be peace until the bell goes.
- Register : there are many different ways in which to answer the register - very fast, very slow, getting louder, getting quieter, in an accent, taking a breath between each word etc. all of which prove funny
- Hands : plan before hand. either - none of you raise your hands ever in the lesson or you all raise them but mysteriously forget what you were going to say. hilarious too. if asked simply say you don't know.
MsAnthrope

You seem a sweet girl. When I was your age I was too shy and lacked confidence, so I didn't think of tricks. It also seems your tricks require the cooperation of friends and I didn't have many of those.
After I was older than your age I didn't have enough interest in teachers to want to trick them.
I am glad you are blogging. Welcome. I look forward to reading more of your experiences.