A person that you don't know their name and do not like and that's what you call them when communicating or talking about a person that you get dislike.
This term came about working on a construction site when it's hard to remember everyone that you meet and want to talk bad about somebody.
1.) Hey Jack leg move out of the way.
2.) What do you think about that Jack leg over there.
It's when you feel at worse for a jet lag.
Hey Roberto, did you come back from NYC?, are you having some jet lag?
OH no Aldo, I'm actually experiencing a JACK LEG. That's how tired I am
When your underage roommate drinks your wine, then tries to hide behind the "open bottle policy" rather than admit that they drank it with their friends and boyfriend.
This term came first into use on the 7th of January, 2012 when a fridge was opened, and it was discovered that two bottles of wine were gone.
I've been wine-jacked! Quick, the authorities must be notified of this heinous crime!
To steal creative works from others and claim them as your own, for the sole purpose of convincing young impressionable models in Derbyshire to possibly show you their naughty bits.
"I el Jacked this guys portfolio and now I have a shoot with that hot model."
Something EXTREMELY, messed up.
Something that is so messed up that it deserves to have a ridiculous description.
That car is jacked up.... like a jacked up, jacked up penguin!
The act of jerking off (typically a man), especially to the point of orgasm.
Originates from the term "jacking off" as well as the similarity of the "cracking" sound from performing it and the opening of usually alcoholic beverage bottles.
It is also a popular perversion of "cracker jack", the brand of caramel corn.
Roommate: "You two were so loud last night! I heard you cracking jack so loud I couldn't get to sleep!"
"Yo, she was cracking jack so hard i almost passed out!"
When somebody is pissing you off
Random guy: your kinda gay. Me: your really jacking my squash right about now