To recapitulate, for those who may have missed this before, the Spoonerism is named for the Reverend William Archibald Spooner (1844-1930), an English cleric and educator who did this unconsciously. One of his famous ones runs:
""You have hissed all my mistory lessons, and in fact tasted the whole werm. I must insist that you leave by the next town drain."
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The Reverend Spooner