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The Day after Mardi Gras that many Juniors and Seniors in High School dread, or don't even go school, due to the Hangover symptoms they have gotten from the previous day.
Guy1: dude, where were you? We had a baseball game yesterday!

Guy2: sorry man, yesterday was Hangover Wednesday, and i just had to celebrate it.
by KILLAGRIFF March 04, 2011