Top Definition
Noun: A time when bros come together (traditional Thursdays) to get good and weekday drunk for no particular reason. A weekly tradition that dates back to 2006.

Used as a Verb: Beasting
Your Slam Piece: "Hey, do you want to go to dinner at my parents house tonight and meet my sisters new boyfriend?"
The Bro: "Come on baby, you know I can't do that. It's Beast Night with the guys."

Your friends: "Are we Beasting tonight?"
You: "OFYB!"
#partying #bros #thursday #portland #tradition
by beastnightpdx October 13, 2011
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