This is the sign on my door this afternoon:
DO NOT DISTURB
NLP PRACTITIONER AT WORK
ABSOLUTELY DO NOT DISTURB*
IF YOU HAVE SOMETHING TO SHOVE THROUGH THE DOOR,
LEAVE ON DOORSTEP AND I WILL RECYCLE AS NORMAL
*if you do disturb me, I promise you will spend the evening as a chicken trying to lay an egg
*Boy made me take out the last bit. He suggested it might be too tempting for some people. But it amused me anyway.