1 definition by badman septic tank

Top Definition
knacker whistle the act of whistiling with your tongue while raising one or both hands in the air, usually done when celebrating something, i.e sporting victory, as a method to gain the attention of a person in the distance, has being known on occasion to be used while intoxicated to stop passing taxis
after a victorious race the stroke man gave a knacker whistle to celebrate
by badman septic tank July 19, 2010
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