A variety of slang, or a slip in speaking, characterized by the transposition of the initial letters or syllables of two (consecutive) words. Occasionally in "marrowsky language". Compare "spoonerism" (now the more usual word).
An instance of this; a spoonerism.

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Connections NYT: Hints For Today's Puzzle, Wed, Jan 14

NYT Strands Today - Hints, Spangram & Answers for January 14

Today’s Wordle Answer Jan 14 #1670- NYT Wordle Hints & Updates

Today's NYT Pips Hints & Answers

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NYT Mini Crossword Answers Today - The Mini for Jan 14 Solved