Librarians are sneaky, and they always fight dirty :)

The librarian (a shy, retiring type) is quiet, and stays away reading a book in the corner. The Principle enters and sees a joy-filled Science teacher playing with his chemicals. He prepares to attack, but is cut off by the shushing of the Librarian. Suddely his need to prove his libido is as good as it ever was (despite what his wife may say) kicks in, and he begins to seduce her, with a sweeping of his combover he makes his move. As they become lost in their passionate embrace they make their first and last mistake... they have let their guard down. With a tinkering of chemicals and an airborne test tube the the librarian and the principal go up in flames. Never underestimate the science teacher.

He would fire them both! ha ha

LOL, thecon! However, you don't mess with a principal (go see "Lean On Me.")

My science teachers has this stuff that if you get one the size of a soccer ball (which she has), soak someone in water and throw it at them and they will start to burn and explode.
I know it's what they use in fireworks, but I don't remember what the chemical is called though.

*shivers*