A British expression used to avoid tempting fate after mentioning good fortune, equivalent to the American 'knock on wood.'
Like 'knock on wood,' this phrase stems from ancient beliefs about tree spirits and the protective power of wood. The British version emphasizes the gentle touching rather than the more forceful knocking, but both serve the same superstitious purpose of avoiding bad luck.
The difference between 'touch wood' and 'knock on wood' reflects interesting cultural variations in superstitious behavior - British speakers tend to favor the gentler 'touch' while Americans prefer the more assertive 'knock.' Both phrases often prompt people to immediately look for actual wood to touch, leading to amusing moments of furniture-hunting mid-conversation.
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