Some tongue twisters rely on rapid alternation between similar but distinct
phonemes (e.g.,
s and
sh ), combining two different alternation patterns, familiar constructs in
loanwords, or other features of a spoken language in order to be difficult to articulate. These deliberately difficult expressions were popular in the 19th century. The popular "she sells seashells" tongue twister was originally published in 1850 as a diction exercise. The term "tongue twister" was first applied to this kind of expression in 1895. "She sells seashells" was turned into a popular song in 1908, with words by British songwriter Terry Sullivan and music by
Harry Gifford. According to folklore, it was said to be inspired by the life and work of
Mary Anning, an early fossil collector. However, there is no evidence that Anning inspired either the tongue twister or the song. Another well-known tongue twister is "
Peter Piper": Many tongue twisters use a combination of
alliteration and
rhyme. They have two or more sequences of
sounds that require repositioning the tongue between syllables, then the same sounds are repeated in a different sequence. An example of this is the song "
Betty Botter" (), first published in 1899: There are twisters that make use of
compound words and their
stems, for example: The following twister entered a contest in
Games Magazine on the November/December 1979 issue and was announced the winner on the March/April 1980 issue: Some tongue twisters take the form of words or short phrases which become tongue twisters when repeated rapidly (the game is often expressed in the form "Say this phrase three (or five, or ten, etc.) times as fast as you can!"). Examples include: • Toy boat • Cricket critic • Unique New York •
A proper copper coffee pot • Red leather, yellow leather • Irish wristwatch, Swiss wristwatch • Peggy Babcock • Red lorry, yellow lorry Some tongue twisters are used for speech practice and vocal warmup: Tongue twisters are used to train pronunciation skills in non-native speakers: Other types of tongue twisters derive their humor from producing vulgar results only when performed incorrectly: Some twisters are amusing because they sound incorrect even when pronounced correctly: In 2013, MIT researchers claimed that this is the trickiest twister to date: == Linguistics ==