Top definition
The act of completing a task with no forethought or planning what so ever.

Normally in one tenth of the time it should take to do.
Person 1: "I need a nuclear power station safety system for tomorrow".

Person 2: "No problem, i'll 'whack it in' this afternoon".
by sup my lo November 25, 2004
Mug icon

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug