What is Sundaynight?
1.
1) The act of putting off assignments, generally large projects for homework, until late Sunday night. Average finish time for sundaynighting is approximately 2-3 am, though all nighters are quite common.
2) Extreme procrastination
Other forms: sundaynight - ing
Abbr: sunnighting, sunighting
1) "Have you finished that atmosphere project yet?"
"Nah, I'm gonna sundaynight it."
2) "Dude!! Stop sundaynighting and get working on that African history essay!"
See 
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