2) According to my cousin from Jersey, in central NJ lingo it means having fucked up teeth and having a general scummy/dirtbag appearance
Me: Uh, well he is jacked.
Me: What, you dont appreciate a nice physique?
Origin from 'hijacked': as the past-progressive meaning stolen in a violent fashion.
Commonly refers to robbery, theft, misuse, seizure, possesion.
Well muscled, iron-bound, pumped.
"Yesterday I jacked a pack of gum from the mall."
2. "That weightlifter sure is jacked. Too bad he's on steroids."