When companies I speak to ask about my 'partner'
My perfect response is "Business or dancing?".
Or when you you call a garage or motor factors to price something up and they say something like "It's £50 plus VAT". WELL WHY DON'T THEY JUST TELL ME HOW MUCH IT IS *INCLUDING* VAT??????? A good way of annoying them back is saying you'll buy the said product and you'll be down for it in half and hour plus 15 minutes.
