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A hazing ritual, typically on a football team, in which a bottle of sports drink is forcibly inserted into a lesser member's anus.
"John got the buffalo run at the party last night... Gatorade bottle. I've still got bloodstains on my carpet."
"We're going to buffalo run Smith for fucking up the game!!"
"The captain buffalo'd his lineman."
by T. K. October 14, 2006
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