
Buffalo buffalo Buffalo buffalo buffalo buffalo Buffalo buffalo
"Buffalo buffalo Buffalo buffalo buffalo buffalo Buffalo buffalo." is a grammatically valid sentence in the English language, used as an example of how homonyms and homophones can be used to create complicated linguistic constructs. It has been discussed in literature since 1972 when the sentence was used by William J. Rapaport, an associate professor at the University at Buffalo. It was posted to Linguist List by Rapaport in 1992. It was also featured in Steven Pinker's 1994 book The Language Instinct.
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That that is is that that is not is not is that it it is
That that is is that that is not is not is that it it is is an English word sequence demonstrating lexical ambiguity. It is used as an example illustrating the importance of proper punctuation.
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