Top Definition
a celebratory event that takes place every year on december 4th to commemorate the release of the song "ether" by rapper nas. things to do on ether day: bump ether, bump jay-z crying on hot 97, discuss the long term effects of ether, congratulate people on youtube, etc.
1: damn, twitter, youtube and hip hop boards are filled with this ether shit, what's that?
2: happy ether day
by naswon01 December 04, 2010

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