The mating ritual of Aussie Bogans, who in order to demonstrate their penis length/girth and demonstrate their readiness and desire to mate with other Bogans, must chug a full beer on video, and then nominate another Bogan to do the same.

Most commonly practiced before a night taking the Commo out to Chapel Street, downing a slab at Bazza's place, or hitting the drags at Dandy.
"Tommo totes just chugged a Vic, and Neknominated that dog cunt Robbo".

"The Ranga got Neknominated, the weak dog only downed a double black!".
by redthehat January 11, 2014
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When you are nominated to "neck" a drink.

Someone who is neknominated has 24 hours after nomination to mix together a variety of spirits (and whatever else they deem worthy/disgusting/difficult) and post a video of chugging it in one go. After necking your drink you then nominate at least one other person.
Jane: "Thanks John for the nomination, I've got blueberry vodka, Jager, regular vodka, wine, absinthe, cider, OJ, salt, sugar, cinnamon and milk in here...." *drinks the mixture* "I now neknominate Bob and Sally!"
by MM-UK February 6, 2014
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One of the woolly little sheep following the neknominate trend "nominates" someone whilst they are filming their own incredibly lame video of them chugging something disgusting, and the person they've chosen HAS to complete a video, unless of course they aren't as desperate to be socially accepted by a bunch of drunken buffoons as said nominator...
"I was Barry's neknomination, better make a well original video of me pouring a drink and then drinking it in a onesie"
by Mike Ockiscore February 2, 2014
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An internet/social media trend where one is nominated by a friend to post a video of them drinking large amounts of alcohol usually in a funny, creative, or absurd way. This normally involves the chugging of multiple beers, 26ers, or mickeys. The nominee must complete a challenge within 24 hours of being nominated. Once the challenge is complete the person then nominates three other friends to each complete their own version of a neknomination video, post it online, challenge three more friends, and the cycle continues.

Also referred to as a "neknom"
Guy 1: Dude! Jared nominated you to perform a neknomination!

Guy 2: Damn, I guess I'm gonna have to get on that.
by tittyfuck69 February 6, 2014
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A grand tradition, with origins dating back to Mesopotamian time, in which a neknominator has the honor (after posting a video of themselves sculling/chugging whatever alcoholic beverage the have available to them) of calling out or "#neknominating" in conjunction with a Facebook tag two others to sculling/chugging an alcoholic beverage. Scholars say the first of the modern era neknominations started with a naval officer in a submarine sinking to the bottom of the Mariana trench and with his last means of communication he had, he #neknominated Will Smith and The KFC Colonel. If you've got one, scull a BEER ya pussy.
Excerpts from Will Smiths video.
"Cheers for the neknomination submarine guy... (sculls a pint of Two Brothers Grizz)... I now neknominate Charles Barkley and David Schwimmer.
by surfergirl557 January 6, 2014
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Guzzle a beer on tape while having a dip of tobacco
Seth hood gets bumble bee'd while neknomination get spread out. If one can slam a beer during the nomination whilst having a dip of skoal he is then crowned as a "hooder" as this challenge exceeds the the former, the former being neknomination. If one is crowned a "Hooder" all must understand neknominations are judged by hooders
by Bartleby Gaines February 1, 2014
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