starting a fight then loosing really bad.
yea,dude started acting all tough and pushing on me,so he got DUN UP.
by Cocobutter123 June 06, 2009
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A simple phrase that you can say to someone that has made a retarded mistake.
Oh my god Blake, ya dun fucked up, your mom will be so pissed with you.
by NoHomo123 November 07, 2019
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(verb) means you fucked up real bad and you are asking for the ass-whoopin of the century
by FaCe October 29, 2003
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You screwed up so bad that the consequences are the equivalent of getting fucked
Guy 1: Oh, I just teamkilled by accident!
Guy 2: OH YA DUN FUCK'D UP NOW!!
by oeiwghowir April 12, 2016
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