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coffeinated 

describes someone who has a state of alertness that usually corresponds to consumption of coffee or other caffeinated beverages.

an over-coffeinated individual would be overly alert (almost paranoid), edgy, generally intolerant of others and reacts quickly without proper control, possibly due to too much caffeine intake.

an under-coffeinated individual would be slow to react and understand things, as if they were stoned or sleep deprived (or more likely in need of coffeination to perk them up).
a conversation between the under-coffeinated and the over-coffeinated:

R: Where's the Simpson file?
V: In the database, where'd you think?
R: Oh yeah, right. I'm looking at the database. I don't see it.
V: You can't be serious? It's under S for Simpson, where'd you think?
R: Where's S??
V: Look, moron, it's after R and before T. If you ask me again, I'm going to hit you upside the head with a mallet!!

B, a properly coffeinated boss of R & V, intervenes.
B: OK, nobody's hitting anyone with a mallet. V, here's the file you need (clicks on file on their computer), but go get some cafeinated coffee or tea before someone else is tempted to rip your head off. Get more sleep before coming to work or everyone will want to hit you with a mallet. Now R, you go to the gym and work off your edgy aggression before you rip into everyone in the office, OK?
coffeinated by Lightning2 October 9, 2008
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Coffeenate 

To drink coffee and become totally amped up by the caffeine.
Ugh it's 6AM, I must coffeenate.

Don't speak to me until I've been coffeenated!
Coffeenate by Alpha_A April 24, 2014

caffeinated 

To be wired on caffeine. Have a caffeine buzz.
After 3 Mocha Frappachinos from Starbucks, I was so caffeinated that I organized my sock drawer!
caffeinated by Hackermom November 10, 2005

Csffeinated 

Take something csffeinated so you’re not sleepy
Csffeinated by Statesfaxonoy June 19, 2023

caffeinate 

vb. to take on caffeine, esp coffee, usually in the morning as part of a regular routine
Boss: There you are, let's get straight down to work.

Employee: Not so fast, I gotta caffeinate first!
caffeinate by m f luder August 23, 2011

Caffeinated Cheerleader 

Ashley Hall - "Caffeinated Cheerleader" The hot girl in the T-mobile ads who drank to much cherry coke and had one too many servings of Lucky Charms who is seen in a T-mobile evaluation center chatting away with her girlfriend about boycotting tuna, getting her head stuck in a sunroof, then he was like "Whateverrrr" and I was like "Whateverrrr"
Like Oh my gawd, my battery is running out! I'm such a caffeinated cheerleaderrrrr!

caffeinhated 

To be disliked by others because of your caffeine intake
"The lazy people at work don't like me because I'm hyper and get a lot done. I'm so caffeinhated."

"When I'm drinking coffee at work the Mormons won't talk to me. I might be caffeinhated."
caffeinhated by Linosova May 13, 2010
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Origin of the word is unknown. Started sometime in World War 2. Given the typical evolution of British slang, could easily have started because what these experts did was confusing or “baffling” to the common person.
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Brent: he just tossed me a slop grenade
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