(v.) To get "jacked up" is to be altered in a fashion that is undesirable or not to normal working condition(Ex. 1). Could also be something completely undesirable, such as an event(Ex 2). Also could be used as slang for being in a fight...and losing(Ex. 3).

(n.) A truck(or car) with a lift kit. Most likely a 4x4 pickup truck. Mainly used as slang by people from rural areas(Ex 4).
1. Man this screwdriver is jacked up! See that bend in it?
2. The water bill is 300 dollars? That is jacked up!
3. Dude did you see John after that fight lastnight? He got jacked up!
4. "Yeah the parking lot is muddy, can't get to the door. I take my Jacked Up and drop it down in four-by-four." -Drink In My Hand by Eric Church.
by Mastercat 001 October 22, 2011
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Unlike what Chandra believes, this term refers to muscular people.
That guy is jacked up! He must work out 24/7!
by daboss43 March 26, 2012
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The state of an automobile when changing one's own tire, probably on the side of the road with a jack.
I changed my flat tire once my Mustang was jacked up and the wheel was off the ground.
by Rev. Sully May 25, 2007
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To jack-up is a gymrat term for working to improve a specific muscel or set of muscels, especially women who want to firm-up their butts.
She is doin something to jack-up that ass. I'll bet she spends an hour-a-day on the stairclimber."
by Jim Inman August 17, 2006
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A “Jacked Up” is a 4x4 vehicle usually a pick up truck modified for off roading
I’ll take my jacked up and drop her down in 4x4
by Mumbl3s8p August 4, 2019
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Danielle: "Did you here that Allie got jacked up at the party last night?!"

Eliana: "OMG!!! What a slut!"
by dickonfire July 29, 2016
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