Simon Danischewsky's letter reminds me of some of the old Hellmanisms I used to do. The following are from 1995.
How many architects should one employ
To change a light bulb? Three, now enjoy.
One to change the bulb when the other two
Have faxed Italy to put the order through
How many QSs are required
To change a light bulb that has expired?
Only one, to make the remark
'It's much cheaper to work in the dark'
How many EH officers does it take
To change a burnt-out light bulb for heaven's sake?
Around about twenty if it has to be done
To advise how to rehab the existing one.
Louis Hellman, London W3