To consume an alcoholic beverage as fast as possible. Mostly used in Australia
Eg. 1 On a hot Friday arvo i walk into the house and my flat mate yells at the top of his lungs Suckadown, i take that ice cold Beer from his hand and drink!!!!!!

Eg. 2 In a group. Cheer's everyone "SUCKADOWN"
by AussieDanos April 28, 2014
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