what was the naughtiest thing you ever did when you where in your high school?

I was a real naughty girl when i was in high school. When i was in my first year my friend was caught throwing mongo seeds actually i was the one who started it and he followed me, unluckily he was the one who was caught doing it. My teacher asked him if there was anyone who trows seed aside from him, ( he knows that i am doing it as well ) then he just said he was the only one. I have a lot of naughty thing when i was in my first year and i think this was the naughtiest.
On my second year in high school i was included with the students who went swimming and told our parents that we have school affair that day. My father was called up and ask to have a meeting with the school directress and the sisters ( it was a catholic school ) We were actually giggling when we were sent to the office because we can't fit into the office!Third year was quite nice except for this T.H.E subject where we have to draw ( front view,back view,rear view until now i don't know how to do it! ) Electronics class was worst because i really don't have idea in soldering and making lights!
Fourth year was a bit worst since i started doing cutting classes! We will go to cinema to watch film or just stay at my friends house.
I was really naughty then and i must say that i really enjoy my high school years. How about you? Do you have any naughty thing you did that you might wanna share??