Top Definition
when a foreign country (most likely a muslim one) shuts down everything when obama visits
"dude there were no cars on the street yesterday in cairo"

"yeah, it was obamadan"
by ibnwarraq August 11, 2009
1 more definition
The holiday following the election of Barack Obama as president. Starting the 4th of November and ending the following 20th of January.
Obamadan: Open a bottle of mixed grape white at 8pm, drunk by 8:30, faded by 9:30 and not sober a full day until 20Jan2009. :)
by RiscaTenwy November 04, 2008

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