Is a person who oftenly/frequently stays up late. Some people stay up til 5am the next day or some just stay up til they get tired...
Joe: fuk, stevo stays up til 2am in da morning bro
Jon: that's becuz stevo's a late nighter kuz
by Mysta D February 05, 2009
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An Adderall-induced all nighter.

Consuming copious amounts of the prescription ADD/ADHD medication Adderall in order to stay up all night and accomplish a given task. This method is most commonly employed by overworked/procrastination inclined college students.
Leroy: "Hey man, you study for this exam?"
Carl: "Yepp, I pulled an Adderall Nighter."
by WHinie December 11, 2008
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When you stay up all night and don't go to sleep despite the fact that you have classes tomorrow, and you really do just hate yourself at this point.
I pulled an all nighter, I feel like dying.
by nicole isn't my real name June 01, 2020
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To stay up all night long to make sure that your are on time for the start of an early morning appointment.

'Pro Nighters' are often insomniacs, or extremely dedicated, or the important event's start time drastically conflicts with a normal sleep cycle.

Pulling a 'pro-nighter' is usually saved for important events such as job interviews, sales meetings, or court; or any event where the long term consequences of being late are far more painful than the short term discomfort of not sleeping.

An "All-Nighter" and a Pro-Nighter" are similar but differ by the priorities of the START and END times of the sleep affecting activities to be performed.

A Pro-Nighter ignores sleep to START an important early morning activity. Whereas the All-Nighter starts an activity and continues it on through to the END without sleep.
"I have to wake up on time and cannot miss that morning meeting. I am going to pull a 'pro-nighter' and make sure I am there on time."

"He has to be a 'pro-nighter'! If he is here at work this early he hasn't gone to bed yet."
by TreatableBum February 25, 2008
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A term used when one is going an entire night without sleeping at all. Commonly seen at a LAN party.
Dude, Mike! Let's pull an all-nighter tonight and see how long we can play UT2k4 without passing out!
by Geist May 22, 2005
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a study session or any other activity that lasts all night
That all-nighter left me exhausted. I didn't get a minute of sleep.
by Light Joker May 10, 2006
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Fucking on a school night (and you have to get up early to go to school or class the next morning; more for high school and college students than anyone else)
P-Phat and Becky had a school nighter last night and as a result P-Phat was late for class today.
by MOCO & P-Phat February 11, 2009
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