Silly sound transposition

• "Blushing crow" for "crushing blow."
• Something said by self-described birdwatcher?
• A slip of the tongue? - no promises
• What each of the other four longest answers in this puzzle is
• Transposition of initial consonants in a pair of words
• ''Let me sew you to your sheet,'' e.g
• "Let me sew you to your sheet," e.g
• A slip of the tongue? — no promises (anag)

WordNet Word definitions in WordNet
n. transposition of initial consonants in a pair of words

Wikipedia Word definitions in Wikipedia
A spoonerism is an error in speech or deliberate play on words in which corresponding consonants , vowels , or morphemes are switched (see metathesis ) between two words in a phrase. An example is saying "The Lord is a shoving leopard" instead of " The ...