A certain hour of the night (usually 2 or 3 in the morning after a lot of drinking) when people simply tell others exactly how they truly feel; often being extremely blunt and harsh. Always very entertaining to be involved in!
Person 1: "It is definitely Blunt hour."

Person 2: "Fuck you! You spend too much time with your girlfriend you bastard!"
by Italian Tintin July 26, 2010
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