An AttitudeAdjustmentTool. Primary training tool of the ExtremeProgrammingMaster. Related to the TwoByFour commonly used to train mules.

''Snoopy said that this tends to give one a distorted view of the press!''

Not sure if it's common usage, but I've seen the verb "fwap" used to describe use of this particular tool.

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Different from a ClueStick in that it does not necessarily bring enlightenment.

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See: ZenSlap, BrutalSarcasm, ClueByFour, ClueStick