Buffalo buffalo buffalo buffalo buffalo is Proper English accoring to William J. Rapaport. He explains his version on the Parsing Challenges list:where to buffalo = to bully around, to do a snow job on. (Poetic license if you think that buffalo can't buffalo other buffalo.) Of course, there's also the optional plural of buffaloes as mere buffalo, with no plural marker.
Then, of course, you can make it more interesting by considering the buffalo in the Buffalo zoo, the Buffalo buffalo. And their peculiar way of buffaloing other Buffalo buffalo, so peculiar that, like the Tennessee waltz which you do by Tennessee waltzing, they Buffalo buffalo those other Buffalo buffalo:
Buffalo buffalo Buffalo buffalo Buffalo buffalo Buffalo buffalo Buffalo buffalo.
Source: Reddit News
