Top Definition
The ultimate in Beer drinking abilities. An unlimathon is only achieved by those with the ability to defeat anyone in sprint drinking and endurance drinking. That is, to beat any opponent in a pint race or a last man standing competition. The Unlimathon extends further into other drinking games and competitions. An Unlimathon drinker is an all around un-defeatable opponent.
Eston is an Unlimathon beer drinker.
by Robert Krauss September 01, 2007
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