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1.
A holiday observed by students worldwide on the last day of a break, when all work assigned are not done yet due to procrastination. Students with senioritis may refuse to observe this holiday.
Today is Homework Day, but I'm not gonna do any work because I'm a senior. I will be playing Doodle Jump all day because I need to stop being a Doodle Scrub.
by Chenimal January 03, 2010
 
2.
The day at the end of a holiday when everyone tries to do all their homework which due the next day after not doing it with the time they had earlier
person 1: Can you come out?
person 2: Nah, got heaps of holiday homework to do
person 1: Save it for homework day lol
by puppet1991.com July 11, 2009