It has been discussed in literature since 1972 when the sentence was used by William J. Rapaport, an associate professor at the University at Buffalo.
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Thomas Tymoczko has pointed out that there is nothing special about eight "buffalos"; any sentence consisting solely of the word "buffalo" repeated any number of times is grammatically correct.
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An expanded form of the sentence is a lyric in the Alt-J song "Buffalo" from the soundtrack of Silver Linings Playbook.
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