Top Definition
To pompously attempt to outdo someone in such a way that makes you look like a douche-bag.
When already told they could not drink from the crystal chalice, Matthew up-douche'd the situation by also pointing out that the chalice is from Tiffany & Co.

After taking a shot of vodka, Jason up-douched himself by stating that he usually only drinks black label whiskey.
by seebass54 July 18, 2011

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