To get on before you get on.

A corruption of the English language by the airline companies.
"'We would like to pre-board.' Well, what exactly is that, anyway? What does it mean to ‘pre-board’, you get on before you get on?" - George Carlin
by Cheese Tits May 28, 2009
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The most fucked up class in mathematics, designed to make students hate higher level math before they even get to it. Combines concepts from algebra, trigonometry, geometry, and every lower level denomination of math into a confusing clusterfuck of topics that has no correlation with Calculus- and doesn't even introduce the derivative. Forces students to memorize about 50 different formulas and be able to call them to attention on demand. To name a few; quadratic formula, slope intercept formula, point slope formula, completing the square formula, partial fraction decomposition formula, midpoint formula, factoring by grouping, distance formula, Pythagorean formula, and many more. This course should not exist.
"Hey dude could you help me with this Pre-Calculus problem?"
"No way man, I'm in calc 1- that shit is way too confusing for me"
by AfghanPanther September 25, 2018
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Pre-dating is the period of time before a couple becomes official. It often includes a significant amount of hanging out, flirting, and often times arouses suspicion amongst friends of either or both parties. Also see talking.
Friend #1: You and John have been hanging out alot lately, are you guys dating???
Friend #2: No, we're pre-dating.
by Chontel J September 8, 2005
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This term is common among First Person Shooter games.

A player "pre-fires" when they're either aware or suspect an enemy to be around a corner or behind some sort of obstruction and they choose to begin firing their weapon before they have Line Of Sight on the enemy (e.g., before they fully round the corner).

The alternative to this is to obtain LOS on the enemy before firing, but differing reaction times and PING/latency can put the player at odds of winning the exchange.
PlayerX pre-fired around the corner, killing PlayerY before they ever saw him!
by Swivel June 12, 2017
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Another name for a pig or hog, especially one that is destined for the slaughterhouse.
I went to the petting zoo and saw some tasty pre-bacon.
by florda_swag March 13, 2012
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Definition: When a rape victim has clenched their butt before the rapist has a chance to penetrate them.
Example Sentence:

Dave: "Hey bro, last night I picked up a cute high school kid but he was totally pre-clenched!"
Catherine: "Ahhh shucks, maybe next time... keep it up!"
by WakeyWakeyHandsOffSnakey October 21, 2018
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A marijuana cigarette, already rolled. Usually refers to a hoot route.
I have a six pack, a couple pre-rolls and I'm ready to go.
by THE_REGULATOR October 8, 2009
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