Top Definition
A fail so bad that surpasses master fail. If you have done a Ultimate legendary fail, you are probably dead, Or you need to be since someone with this kind of failure is a shame to all mankind and the universe.
Person 1: HAHA I can own you in any game

1.5 seconds later

Person 2: Ultimate Legendary Fail I beated u 999-0

Person 1: *commits suicide*
by LOLOLOL xD LOL April 14, 2010
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