1 definition by Sir Wisdom of Yorkshire

Top Definition
an attempt to concisely pigeonhole a person based on their peculiar behavior at the present moment.(practical use)- to make him/her critically aware of their current behavior
1. your friend arrives at the bar, sits next to you, and says, "Remember in third grade when you asked Stacy out and..."
annoyed friend interrupts, "Dude, you're being that dude."

2. guy on the other side of the room screams, "F--- YEAHHHH!!!" when Dave Matthews comes on the speakers.

girl says to her friend, "Wow, He's that dude."

by Sir Wisdom of Yorkshire August 21, 2008

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