Top definition
National drinking holiday in commemoration of A.T Mullbags The First may she live long & prosper) passing of exams and driving test. Participants of this festival commemorate the day by drinking excessively, shifting one another and falling into a nice comatosed sleep.
"I consumed so many beverages on Mullbags Day"

"Dude, I love Mullbags Day. Here, smell my fingers."

"Dude, I can't remember a thing of Mullbags Day!"
"Brah, you're not supposed to, it was Mullbags Day!"
by ClungieMama6969 January 23, 2013
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