The night before the first day of school when all of the grade twelves have a huge party and get very drunk then come to school the next morning with big hangovers.
"It looks like the grade twelves had one big ass party on hell night."
by Alex notenbomer April 22, 2006
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A night or day at work when everything is so out of control it is percieved to be like you are looking into the face of satan.
Leeeeenda: "Was last night a Hell Night?"

Jo-jo: "Kinda, we had a crazy amount of shit going on. I thought I was going to have to stay to get it finished."
by Abigail Maria August 14, 2008
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A night or day at work when everything is so out of control it is percieved to be like you are grappling with satan.
Jo-jo: "How was last night at work?"

Leeeeeenda: "OMG. It was a hell night! I had to give this old guy a bed bath AND BEYOND!"

by AbigailsMaria August 28, 2008
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