spoonerism

/ˈspunəˌrɪzəm/
noun
  1. A humorous error in speech where the first sounds of two words are swapped, often creating a funny or nonsensical phrase.
    • The comedian's routine was full of spoonerisms, like 'a blushing crow' for 'a crushing blow.'
    • My grandfather accidentally made a spoonerism when he said 'you have hissed all my mystery lectures' instead of 'missed all my history lectures.'
    • Saying 'a well-boiled icicle' instead of 'a well-oiled bicycle' is a classic spoonerism.
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