An old one I found that made me smile (and I suspect only me).
INT. SCHOOL HALL. DAY.
TWO TEACHERS ARE TALKING AT THE FRONT OF THE EXAM HALL ONE IS LOOKING THROUGH A BOOK ENTITLED 'EXAM PROCEDURES'.
TEACHER1
Well every year it's the same, I can't help feel that certain people are cheating.
TEACHER2
I know sadly.
TEACHER1
I mean take young Jenny Phillips, I think she may have managed to somehow get a an early look at that History Exam we were just in.
TEACHER2
What makes you say that?
HE PRODUCES AN A4 ENVELOPE AND WAVES IT.
TEACHER1
She sent her entry in by post, it arrived yesterday morning. How are you getting on there?
SLAMS BOOK.
TEACHER2
Well the rule book is very clear on the use of mobile phones, calculators, pda's and text books even semaphore but there is definitely nothing against the summoning of the spirit of dead scientists.
CUT TO:
A SCHOOL BOY SITTING AT A DESK, THE GHOST OF EINSTEIN STANDS NEXT TO HIM.
EINSTIEN
Well young timothy that is simply wrong, my teachings disproved that particular theory but I suspect that is what they want to hear. The answer to the next question is Cheese.
END
Typical JM stuff!