Top Definition
To screw something up that look really promising due to a temporary laps in sanity, awareness, responsibility or sobrity. This may be due to the fault of other or due to your own misgivings.
Guy: Oh crap!
Guy2: What?
Guy: I totally did a diana on my minor diploma!
Guy2: I knew you would diana it.
Guy: stfu
Guy2 diana it
Guy: STFU!
by beagz January 13, 2008

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