Any action executed half-heartedly, incompetently or without necessary precautions leading to unwanted or undesirable results. It is used as an expletive or descriptive term of actions past.
Bush administration's proof of WMDs was complete hackdiggery.

Traditional blood transfusions where veins were attached from the arm of the receiver of blood and its recipient could be considered hackdiggery.

Hackdiggery is the rummaging around for the cap of the toothpaste that fell behind the washing machine with the handle of a broom.
by Samuel Janzen March 23, 2006
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