In a spoonerism, letters or parts of words change places — either as a mistake or on purpose. The effect can be quite humorous.
It is kisstomary to to cuss the bride.
William Archibald Spooner (1844–1930) inspired the name “spoonerismSpoonerismus (Vertauschung einleitender Wortteile)spoonerism” for this type of wordplay. He was a scholarGelehrte(r)scholar of New College, Oxford, and was famous for switching the order of words to create quite funny-sounding statements. In the example above, the original sentence would have read: “It is customaryüblichcustomary to kiss the brideBrautbride.”