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A hammer. Usually used on delicate devices when a real screwdriver would be better. Refers to the habit of a Birmingham inhabitant (i.e. simpleton] to take a rather simplitic view of maintenance. Similar to percussive maintenance.

If it don't work - hit it.
If it still don't work, use a bigger hammer.
Ay, Jimmeh, pass uz tha' Birmingham Screwdriver - oi can't geh this new graphics card in this bastard compu'er wivaht a slight modifahcation

whack There, snug as yo' mum
by Bigger Boy January 21, 2006