It's called 'Ask to see my ID card and I'll eat it'. (although this opens him up the next time he sits next to Paul Merton!)
But I tell you this. If I am ever asked, on the streets of London, or in any other venue, public or private, to produce my ID card as evidence that I am who I say I am, when I have done nothing wrong and when I am simply ambling along and breathing God's fresh air like any other freeborn Englishman, then I will take that card out of my wallet and physically eat it in the presence of whatever emanation of the state has demanded that I produce it.
There is a nice piece of writing on the BBC site about ID cards, especially if they have RFID fitted.