@mheredge, @Teach, @GemmaRowlands, @amatsuscribbler , Can you understand at one hearing only the "Buffalo buffalo Buffalo buffalo buffalo buffalo Buffalo buffalo" what is a grammatically correct sentence in American English, often presented as an example of how homonyms and homophones can be used to create complicated linguistic constructs through lexical ambiguity. It has been discussed in literature in various forms since 1967, when it appeared in Dmitri Borgmann's Beyond Language: Adventures in Word and Thought.
The sentence employs three distinct meanings of the word buffalo:
as a proper noun to refer to a specific place named Buffalo, the city of Buffalo, New York being the most notable; as a verb (uncommon in regular usage) to buffalo, meaning "to bully, harass, or intimidate" or "to baffle"; and as a noun to refer to the animal, bison (often called buffalo in North America). The plural is also buffalo.
An expanded form of the sentence which preserves the original word order is: "Buffalo bison, that other Buffalo bison bully, also bully Buffalo bison." Wikipedia