From Wikipedia:
> The sentence uses three meanings of the word buffalo: the city of Buffalo, New York, the somewhat uncommon verb "to buffalo" (meaning "to bully or intimidate"), as well as the animal buffalo. When the punctuation and grammar are expanded, the sentence could read as follows: "Buffalo buffalo that Buffalo buffalo buffalo, buffalo Buffalo buffalo." With the use of synonyms the sentence could become "Buffalo bison that other Buffalo bison bully, themselves bully Buffalo bison."