The Combat Zorbing Pikey is a state-of-the-art EOD tool currently under development at ARRSE laboratories, under the guidance of Dr Clunge and Brighton Hippy (who comes up with the names). It essentially consists of a giant, inflatable ball into which a miscreant is inserted and sent along routes to try and trip any IEDs encountered.
Other uses include the proposed sport of motorised CZP football/snooker/curling/any other game involving a pikey encased in a bouncy ball and an AFV. A navalised version is also under development for 3 Cdo Brigade, but apparently it is quite difficult to zorb whilst wearing a cocktail frock.
Or possibly Correct Zero Point, some bollocks to do with zeroing a rifle correctly.