You're an idiot, let me point that out.
If you decided to go through with this, the whole school will end up with a punishment for an act you did. They could probably lock down all the printers so they are unusable for everyone in the school and everything would have to be printed at home, and those who can't print at home can't do anything.
I can also guarantee you that if you get caught, not only will the school get pissed so will the district, your parents, and possibly the police if it's vulgar (which would end up on your permanent record by the way, even though you are not in 9th grade). I personally would find it very embarrassing and stupid to explain why I did it.
I would suggest not doing it.