Spoonerism Day is observed worldwide every July 22, celebrating the playful linguistic phenomenon known as spoonerisms, which involve swapping the sounds of words in a phrase. The holiday is named after William Archibald Spooner, an English clergyman known for his humorous speech errors, although many of the spoonerisms attributed to him are not definitively proven to have been actually spoken by him. Activities on this day include creating and sharing spoonerisms with friends, engaging in games or challenges, and posting favorite spoonerisms on social media using the hashtag #SpoonerismDay. The date also coincides with Spooner’s birthday, adding a personal significance to the celebration. While spoonerisms have existed since before Spooner's time, they became closely associated with him, leading to the term's entry into the Oxford English Dictionary by 1900.