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1 definition by Nate Hughes [GrandpaNate]

vati is used quite extensively in political articles, it means: vote against the incumbent(s)
vati means vote in a certian manner, against the incumbent.
You can vati, vote against one candidate.
Exsample: We don't need term-limits, just vati against the incumbents.
by Nate Hughes [GrandpaNate] September 14, 2007