A playful yet instructive survey of contrepèteries (spoonerisms) that assembles comic examples of accidental letter and syllable transpositions and shows how they can produce anything from mere laughter to serious social or professional embarrassment. It situates the phenomenon historically and in relation to anagrams, classifies varieties of verbal inversions, and offers practical observations and remedies to help speakers detect and avoid disruptive slips while appreciating the craft of wordplay.