"Buffalo buffalo Buffalo buffalo buffalo buffalo Buffalo buffalo."

^ that up there, is a grammatically correct sentence! My brain hurts from understanding it, as explained in this Wiki.

The sentence uses 3 forms of the word:

Buffalo the city
buffalo the animal
buffalo an verb meaning "to bully"

If you replace the animal form with the word "people", it helps to understand the sentence better (sort of).

Buffalo people Buffalo people buffalo Buffalo people.
so...
Buffalo people (whom) Buffalo people buffalo (also happen to) buffalo Buffalo people.

Does your brain hurt?

Just a weird little tidbit that is totally useless but interesting to know none the less.