clipped from: www.mentalfloss.com   
Believe it or not, this sentence is grammatically correct and has meaning: “Buffalo buffalo Buffalo buffalo buffalo buffalo Buffalo buffalo.” First devised by professor William J. Rapaport in 1972, the sentence uses various meanings and parts of speech for the term “buffalo” (and its related proper noun “Buffalo”) to make an extremely hard-to-parse sentence

Although most people know “buffalo” as both a singular and plural term for bison, and “Buffalo” as a city in New York, “buffalo” is also a verb meaning “to bully, confuse, deceive, or intimidate

Still too hard to follow for those of us who don’t know “buffalo” as a verb

[Those] buffalo(es) from Buffalo [that are intimidated by] buffalo(es) from Buffalo intimidate buffalo(es) from Buffalo

once more

Bison from Buffalo, New York who are intimidated by other bison in their community also happen to intimidate other bison in their community