Jok or Jocking, a slang term used for the word "fight," its described as a certain way of fighting, but with less sincerity.
"These niggas want to jok." Translation: These bitches want to fight. To Jok is to fight someone.
Jøk is slang for dumbass and is used in a double sense; It's at the one side used for making a fool out of the offended, and at the other side used for making a fool out of those who get hung up in it's deliberated misspelling.
Matt: Every jøk should know how to use e=mc^2
Tore: You're stupid for mispelling "gjøk"
Matt: Who's stupid now, dumbass!
Jok is a very versatile word, it can be used to mean almopst any adjective or noun. The most prominent meaning being penis.
"Jok in ya Sok" - vaginal or oral sex.
"You Jok!" - You Dick/Tool!
"Jok You!" - Use your imagination :P