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1. An inappropriately large jump in weight between attempts in a powerlifting competition.

2. Any situation, sports or otherwise, where a person attempts to accomplish something far beyond their previous best effort.
Boy: Daddy, that big hairy man in a swimsuit just PR'd at 533.5. And he called for 570 for his final lift! That's a crazy jump.

Dad: No, son, that's an AC Jump.
AC Jump by Le Pizz April 7, 2010
Related Words

The Dirty AC 

Common reference to Allegany County. used by its inhabitants to describe the standards of most who reside there.
Guy 1: Oh gross! look at that chick over there!
Guy 2: Wtf she must weight at least 300.. why is she wearing booty shorts
Guy 1: Only in The Dirty AC
The Dirty AC by This Guy Now August 14, 2012

AC Slater 

When you decide to markdean taking a crap on the toilet facing the wrong direction. Much like how AC Slater sits in a chair when he's at the Maxx.
I had to markdean so bad but I wanted to read the poster behind the toilet so I decided to take an AC Slater. Afterwards my knees were bruised much like Lambourn's.
AC Slater by clarksd September 17, 2008
When someone who has soft hands has one or both hurt during, but not limited, one of the following activities; doing a keg stand for so long your hand begins to deteriorate, after doing a louisville chugger you fall and land on your hand, you are partying at a club and start fist pumping so hard you hit the chandelier and break some glass, and/or you sleep on D’s couch after a night of partying and you wake up to hydrate but you forget the beer on the floor and you slip and land on your hand.
Q: Dude, crazy party last night, let's do it again. I went to refill the keg while you slept. Can you help me bring in the keg?

A: Dude, remember when I jumped off the roof last night, trying to dive into the pull, well as I dove in i hit that chair someone had thrown in earlier, so now I have an AC hand. I can't help you, get swayze to help you.

R: Dude, you know that you're the one that through the chair into the pool before the party started right?

A: Oh yeah, I forgot. So this AC Hand is my own doing apparently, NOT, Got HEEM!!!
AC Hand by where is my cytomax September 17, 2012

Mexican AC 

The system of cooling off a car by rolling down the windows.
Bob: It's a hundred degrees out - I can't believe your car doesn't have air conditioning.

John: Shut up. It has Mexican AC - just roll down the window.
Mexican AC by Maldoven July 26, 2004
Pretty much the flying fortress of death. The AC-130 Gunship is a modified version of the U.S. Air Force's C-130 Cargo airplane (hense the "C" for cargo)... With the "A" added on making it "Attack Cargo" (AC). Equipped with a Mini gun aka rail gun, for close support near or around friendlies or civilians, a 40mm gun... unleashing 40mm explosive rounds to raise some hell, and lastly the biggest bang for your tax dollars, the 105mm Howitzer cannon, firing a 105mm explosive round to decimate anyone who has the balls to mess with the U.S. Military. The AC-130 is also equipped with highly advanced technology systems, including thermal vision, heat vision, and even strobe programs to see friendly troops on the ground... there is no where to hide from certain death from above.
-Call of Duty Modern Warfare 2: "Friendly AC130 above"

- Future Weapons Episode on the AC-130 Gunship "Spooky"

- "Dude, it looks like he got into a fight with an AC130"

- "My AC130 merked you noob!"
AC-130 by paintballer4e16 February 4, 2010