a hybrid of rock and folk. (it used to be fock but then that turned out to mean something entirely different according to this site, so now it's rolk.)
1) backstabbing individual
2) cowardly act toward an innocent individual
3) liar and full of BS
4) act of selfish personal gain at the cost of anything
slang for ecstasy. the term comes from the word rolls which also means ecstasy just mixed with the polish slang "kolki". it's a Polish English hybrid word. it is mostly used within the polish american clubber community in the chicago club scenes.
"Dude, i'm rolling balls, these rolki's you sold to me at the club are awesome."