1 definition by JavzMyster

Top Definition
The act of being on an Instant Messenger (AIM, Yahoo IM, Windows Live, etc.) and sending your friends links to what ever you're seeing on urbandictionary.com, and they send you one back, and so on.
Guy 1: So what were you doing yesterday?

Guy 2: I was UDing with Dean.

Guy 1: Douche.
by JavzMyster August 20, 2009

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