three on a match


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three on a match

Any action that is thought to cause bad luck. Lighting three cigarettes with one match was regarded as a dangerous practice by soldiers in wartime, as the burning match could reveal their position to the enemy. Unless you enjoy suffering, steer clear of things like broken mirrors and three on a match! We can't have three on a match, or else something bad is sure to happen!
See also: match, on, three