A person who is so unbelievably slutty and a whore.
"You're such a Jack."
jack is a guy that cant run fast, but sure can fuck fast. you can walk up to him and offer 2k for a night and he will do it. he only fucks hot girls and fat ass boys. he is the type of person to go to the strip club and get a lap dance for 100k. if you ever meet a jack, get ready to bleed your sack.
omg ima ask that jack over there for a fun night
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